./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p03.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b51e5b92-f9a8-46cf-974e-5f37fc085351/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b51e5b92-f9a8-46cf-974e-5f37fc085351/bin/utaipan-verify-SwPr7d2a91/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b51e5b92-f9a8-46cf-974e-5f37fc085351/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b51e5b92-f9a8-46cf-974e-5f37fc085351/bin/utaipan-verify-SwPr7d2a91/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p03.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b51e5b92-f9a8-46cf-974e-5f37fc085351/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b51e5b92-f9a8-46cf-974e-5f37fc085351/bin/utaipan-verify-SwPr7d2a91 --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 64bit --witnessprinter.graph.data.programhash 3b705ca0c5b5371dfb056caad606a25fce2d2b74615677865ff593635c093e46 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 23:20:10,967 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 23:20:11,037 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b51e5b92-f9a8-46cf-974e-5f37fc085351/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-24 23:20:11,043 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 23:20:11,044 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 23:20:11,071 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 23:20:11,072 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 23:20:11,073 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 23:20:11,074 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 23:20:11,074 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 23:20:11,075 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-24 23:20:11,076 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-24 23:20:11,076 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-24 23:20:11,077 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-24 23:20:11,078 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-24 23:20:11,078 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-24 23:20:11,079 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-24 23:20:11,079 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-24 23:20:11,080 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-24 23:20:11,081 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-24 23:20:11,081 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-24 23:20:11,082 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-24 23:20:11,083 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 23:20:11,083 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 23:20:11,084 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 23:20:11,084 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 23:20:11,085 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 23:20:11,085 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 23:20:11,086 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 23:20:11,086 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 23:20:11,087 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 23:20:11,087 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 23:20:11,088 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 23:20:11,088 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 23:20:11,088 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:20:11,089 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 23:20:11,089 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 23:20:11,089 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-24 23:20:11,090 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-24 23:20:11,090 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 23:20:11,090 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 23:20:11,091 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-24 23:20:11,091 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-24 23:20:11,092 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 23:20:11,092 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_b51e5b92-f9a8-46cf-974e-5f37fc085351/bin/utaipan-verify-SwPr7d2a91/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b51e5b92-f9a8-46cf-974e-5f37fc085351/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3b705ca0c5b5371dfb056caad606a25fce2d2b74615677865ff593635c093e46 [2023-11-24 23:20:11,335 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 23:20:11,365 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 23:20:11,368 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 23:20:11,369 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 23:20:11,370 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 23:20:11,371 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b51e5b92-f9a8-46cf-974e-5f37fc085351/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p03.c [2023-11-24 23:20:14,537 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 23:20:14,767 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 23:20:14,767 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b51e5b92-f9a8-46cf-974e-5f37fc085351/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p03.c [2023-11-24 23:20:14,779 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b51e5b92-f9a8-46cf-974e-5f37fc085351/bin/utaipan-verify-SwPr7d2a91/data/fdc3517a4/62e0f74551c2454d89863c625e47657f/FLAG445580e69 [2023-11-24 23:20:14,804 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b51e5b92-f9a8-46cf-974e-5f37fc085351/bin/utaipan-verify-SwPr7d2a91/data/fdc3517a4/62e0f74551c2454d89863c625e47657f [2023-11-24 23:20:14,811 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 23:20:14,813 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 23:20:14,815 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 23:20:14,816 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 23:20:14,821 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 23:20:14,825 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:20:14" (1/1) ... [2023-11-24 23:20:14,826 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3093a517 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:20:14, skipping insertion in model container [2023-11-24 23:20:14,826 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:20:14" (1/1) ... [2023-11-24 23:20:14,867 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 23:20:15,040 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_b51e5b92-f9a8-46cf-974e-5f37fc085351/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p03.c[1266,1279] [2023-11-24 23:20:15,174 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:20:15,183 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 23:20:15,196 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_b51e5b92-f9a8-46cf-974e-5f37fc085351/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p03.c[1266,1279] [2023-11-24 23:20:15,360 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:20:15,377 INFO L206 MainTranslator]: Completed translation [2023-11-24 23:20:15,377 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:20:15 WrapperNode [2023-11-24 23:20:15,377 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 23:20:15,378 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 23:20:15,379 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 23:20:15,379 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 23:20:15,386 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:20:15" (1/1) ... [2023-11-24 23:20:15,417 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:20:15" (1/1) ... [2023-11-24 23:20:15,518 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 745 [2023-11-24 23:20:15,518 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 23:20:15,519 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 23:20:15,519 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 23:20:15,519 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 23:20:15,529 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:20:15" (1/1) ... [2023-11-24 23:20:15,530 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:20:15" (1/1) ... [2023-11-24 23:20:15,547 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:20:15" (1/1) ... [2023-11-24 23:20:15,547 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:20:15" (1/1) ... [2023-11-24 23:20:15,590 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:20:15" (1/1) ... [2023-11-24 23:20:15,597 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:20:15" (1/1) ... [2023-11-24 23:20:15,613 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:20:15" (1/1) ... [2023-11-24 23:20:15,621 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:20:15" (1/1) ... [2023-11-24 23:20:15,646 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 23:20:15,647 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 23:20:15,647 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 23:20:15,648 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 23:20:15,649 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:20:15" (1/1) ... [2023-11-24 23:20:15,655 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:20:15,668 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b51e5b92-f9a8-46cf-974e-5f37fc085351/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:20:15,681 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b51e5b92-f9a8-46cf-974e-5f37fc085351/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-24 23:20:15,700 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b51e5b92-f9a8-46cf-974e-5f37fc085351/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-24 23:20:15,725 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 23:20:15,726 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-24 23:20:15,726 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 23:20:15,726 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 23:20:15,892 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 23:20:15,894 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 23:20:16,785 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 23:20:17,712 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 23:20:17,712 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-24 23:20:17,715 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:20:17 BoogieIcfgContainer [2023-11-24 23:20:17,715 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 23:20:17,719 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 23:20:17,720 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 23:20:17,723 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 23:20:17,724 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 11:20:14" (1/3) ... [2023-11-24 23:20:17,724 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68f4e122 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:20:17, skipping insertion in model container [2023-11-24 23:20:17,725 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:20:15" (2/3) ... [2023-11-24 23:20:17,727 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68f4e122 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:20:17, skipping insertion in model container [2023-11-24 23:20:17,727 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:20:17" (3/3) ... [2023-11-24 23:20:17,729 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p03.c [2023-11-24 23:20:17,751 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 23:20:17,751 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-24 23:20:17,812 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 23:20:17,818 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;@2ed7852e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 23:20:17,818 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-24 23:20:17,823 INFO L276 IsEmpty]: Start isEmpty. Operand has 7 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 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) [2023-11-24 23:20:17,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-24 23:20:17,829 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:20:17,829 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-24 23:20:17,830 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:20:17,836 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:20:17,836 INFO L85 PathProgramCache]: Analyzing trace with hash 17206156, now seen corresponding path program 1 times [2023-11-24 23:20:17,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:20:17,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007567684] [2023-11-24 23:20:17,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:20:17,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:20:18,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 23:20:18,349 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-24 23:20:18,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 23:20:18,556 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-24 23:20:18,558 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-24 23:20:18,559 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-24 23:20:18,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-24 23:20:18,566 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-24 23:20:18,570 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-24 23:20:18,595 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2023-11-24 23:20:18,611 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.11 11:20:18 BoogieIcfgContainer [2023-11-24 23:20:18,611 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-24 23:20:18,612 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-24 23:20:18,612 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-24 23:20:18,613 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-24 23:20:18,613 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:20:17" (3/4) ... [2023-11-24 23:20:18,615 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-24 23:20:18,617 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-24 23:20:18,618 INFO L158 Benchmark]: Toolchain (without parser) took 3804.23ms. Allocated memory was 130.0MB in the beginning and 209.7MB in the end (delta: 79.7MB). Free memory was 83.2MB in the beginning and 87.6MB in the end (delta: -4.4MB). Peak memory consumption was 75.9MB. Max. memory is 16.1GB. [2023-11-24 23:20:18,618 INFO L158 Benchmark]: CDTParser took 1.18ms. Allocated memory is still 130.0MB. Free memory was 77.3MB in the beginning and 77.1MB in the end (delta: 125.9kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 23:20:18,619 INFO L158 Benchmark]: CACSL2BoogieTranslator took 562.91ms. Allocated memory was 130.0MB in the beginning and 165.7MB in the end (delta: 35.7MB). Free memory was 83.2MB in the beginning and 131.4MB in the end (delta: -48.2MB). Peak memory consumption was 22.8MB. Max. memory is 16.1GB. [2023-11-24 23:20:18,620 INFO L158 Benchmark]: Boogie Procedure Inliner took 139.89ms. Allocated memory is still 165.7MB. Free memory was 131.4MB in the beginning and 117.9MB in the end (delta: 13.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-24 23:20:18,620 INFO L158 Benchmark]: Boogie Preprocessor took 127.25ms. Allocated memory is still 165.7MB. Free memory was 117.9MB in the beginning and 113.4MB in the end (delta: 4.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-24 23:20:18,621 INFO L158 Benchmark]: RCFGBuilder took 2067.88ms. Allocated memory was 165.7MB in the beginning and 209.7MB in the end (delta: 44.0MB). Free memory was 112.5MB in the beginning and 135.8MB in the end (delta: -23.3MB). Peak memory consumption was 80.6MB. Max. memory is 16.1GB. [2023-11-24 23:20:18,622 INFO L158 Benchmark]: TraceAbstraction took 892.20ms. Allocated memory is still 209.7MB. Free memory was 135.8MB in the beginning and 88.6MB in the end (delta: 47.2MB). Peak memory consumption was 48.2MB. Max. memory is 16.1GB. [2023-11-24 23:20:18,622 INFO L158 Benchmark]: Witness Printer took 4.64ms. Allocated memory is still 209.7MB. Free memory was 88.6MB in the beginning and 87.6MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 23:20:18,626 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.18ms. Allocated memory is still 130.0MB. Free memory was 77.3MB in the beginning and 77.1MB in the end (delta: 125.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 562.91ms. Allocated memory was 130.0MB in the beginning and 165.7MB in the end (delta: 35.7MB). Free memory was 83.2MB in the beginning and 131.4MB in the end (delta: -48.2MB). Peak memory consumption was 22.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 139.89ms. Allocated memory is still 165.7MB. Free memory was 131.4MB in the beginning and 117.9MB in the end (delta: 13.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Preprocessor took 127.25ms. Allocated memory is still 165.7MB. Free memory was 117.9MB in the beginning and 113.4MB in the end (delta: 4.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 2067.88ms. Allocated memory was 165.7MB in the beginning and 209.7MB in the end (delta: 44.0MB). Free memory was 112.5MB in the beginning and 135.8MB in the end (delta: -23.3MB). Peak memory consumption was 80.6MB. Max. memory is 16.1GB. * TraceAbstraction took 892.20ms. Allocated memory is still 209.7MB. Free memory was 135.8MB in the beginning and 88.6MB in the end (delta: 47.2MB). Peak memory consumption was 48.2MB. Max. memory is 16.1GB. * Witness Printer took 4.64ms. Allocated memory is still 209.7MB. Free memory was 88.6MB in the beginning and 87.6MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 21]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: overapproximation of bitwiseAnd at line 152. Possible FailurePath: [L26] const SORT_1 mask_SORT_1 = (SORT_1)-1 >> (sizeof(SORT_1) * 8 - 1); [L27] const SORT_1 msb_SORT_1 = (SORT_1)1 << (1 - 1); [L29] const SORT_3 mask_SORT_3 = (SORT_3)-1 >> (sizeof(SORT_3) * 8 - 8); [L30] const SORT_3 msb_SORT_3 = (SORT_3)1 << (8 - 1); [L32] const SORT_7 mask_SORT_7 = (SORT_7)-1 >> (sizeof(SORT_7) * 8 - 10); [L33] const SORT_7 msb_SORT_7 = (SORT_7)1 << (10 - 1); [L35] const SORT_11 mask_SORT_11 = (SORT_11)-1 >> (sizeof(SORT_11) * 8 - 2); [L36] const SORT_11 msb_SORT_11 = (SORT_11)1 << (2 - 1); [L38] const SORT_13 mask_SORT_13 = (SORT_13)-1 >> (sizeof(SORT_13) * 8 - 32); [L39] const SORT_13 msb_SORT_13 = (SORT_13)1 << (32 - 1); [L41] const SORT_30 mask_SORT_30 = (SORT_30)-1 >> (sizeof(SORT_30) * 8 - 4); [L42] const SORT_30 msb_SORT_30 = (SORT_30)1 << (4 - 1); [L44] const SORT_7 var_8 = 0; [L45] const SORT_13 var_15 = 0; [L46] const SORT_1 var_19 = 1; [L47] const SORT_1 var_23 = 0; [L48] const SORT_13 var_74 = 1; [L49] const SORT_13 var_78 = 104; [L51] SORT_1 input_2; [L52] SORT_3 input_4; [L53] SORT_1 input_5; [L54] SORT_1 input_6; [L55] SORT_1 input_28; [L56] SORT_30 input_31; [L57] SORT_1 input_33; [L58] SORT_30 input_35; [L59] SORT_1 input_37; [L60] SORT_1 input_39; [L61] SORT_1 input_45; [L62] SORT_1 input_47; [L63] SORT_1 input_49; [L64] SORT_3 input_53; [L65] SORT_1 input_56; [L66] SORT_1 input_66; [L67] SORT_7 input_72; [L68] SORT_1 input_86; [L69] SORT_1 input_92; [L70] SORT_1 input_98; [L71] SORT_1 input_104; [L72] SORT_1 input_105; [L73] SORT_1 input_106; [L74] SORT_1 input_120; [L75] SORT_1 input_122; [L76] SORT_1 input_137; [L77] SORT_1 input_138; [L78] SORT_1 input_139; [L80] EXPR __VERIFIER_nondet_ushort() & mask_SORT_7 [L80] SORT_7 state_9 = __VERIFIER_nondet_ushort() & mask_SORT_7; [L81] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L81] SORT_1 state_24 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L82] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L82] SORT_1 state_26 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L83] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L83] SORT_1 state_41 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L84] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L84] SORT_1 state_43 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L85] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L85] SORT_1 state_51 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L86] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L86] SORT_1 state_58 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L87] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L87] SORT_1 state_60 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L88] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L88] SORT_1 state_62 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L89] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L89] SORT_1 state_64 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L90] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L90] SORT_1 state_68 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L91] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L91] SORT_1 state_70 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L93] SORT_7 init_10_arg_1 = var_8; [L94] state_9 = init_10_arg_1 [L95] SORT_1 init_25_arg_1 = var_23; [L96] state_24 = init_25_arg_1 [L97] SORT_1 init_27_arg_1 = var_23; [L98] state_26 = init_27_arg_1 [L99] SORT_1 init_42_arg_1 = var_23; [L100] state_41 = init_42_arg_1 [L101] SORT_1 init_44_arg_1 = var_23; [L102] state_43 = init_44_arg_1 [L103] SORT_1 init_52_arg_1 = var_19; [L104] state_51 = init_52_arg_1 [L105] SORT_1 init_59_arg_1 = var_23; [L106] state_58 = init_59_arg_1 [L107] SORT_1 init_61_arg_1 = var_23; [L108] state_60 = init_61_arg_1 [L109] SORT_1 init_63_arg_1 = var_23; [L110] state_62 = init_63_arg_1 [L111] SORT_1 init_65_arg_1 = var_23; [L112] state_64 = init_65_arg_1 [L113] SORT_1 init_69_arg_1 = var_23; [L114] state_68 = init_69_arg_1 [L115] SORT_1 init_71_arg_1 = var_23; [L116] state_70 = init_71_arg_1 VAL [init_10_arg_1=0, init_25_arg_1=0, init_27_arg_1=0, init_42_arg_1=0, init_44_arg_1=0, init_52_arg_1=1, init_59_arg_1=0, init_61_arg_1=0, init_63_arg_1=0, init_65_arg_1=0, init_69_arg_1=0, init_71_arg_1=0, mask_SORT_11=3, mask_SORT_13=4294967295, mask_SORT_1=1, mask_SORT_30=15, mask_SORT_3=255, mask_SORT_7=1023, msb_SORT_11=2, msb_SORT_13=2147483648, msb_SORT_1=1, msb_SORT_30=8, msb_SORT_3=128, msb_SORT_7=512, state_24=0, state_26=0, state_41=0, state_43=0, state_51=1, state_58=0, state_60=0, state_62=0, state_64=0, state_68=0, state_70=0, state_9=0, var_15=0, var_19=1, var_23=0, var_74=1, var_78=104, var_8=0] [L119] input_2 = __VERIFIER_nondet_uchar() [L120] input_4 = __VERIFIER_nondet_uchar() [L121] input_5 = __VERIFIER_nondet_uchar() [L122] input_6 = __VERIFIER_nondet_uchar() [L123] input_28 = __VERIFIER_nondet_uchar() [L124] input_31 = __VERIFIER_nondet_uchar() [L125] input_33 = __VERIFIER_nondet_uchar() [L126] input_35 = __VERIFIER_nondet_uchar() [L127] input_37 = __VERIFIER_nondet_uchar() [L128] input_39 = __VERIFIER_nondet_uchar() [L129] input_45 = __VERIFIER_nondet_uchar() [L130] input_47 = __VERIFIER_nondet_uchar() [L131] input_49 = __VERIFIER_nondet_uchar() [L132] input_53 = __VERIFIER_nondet_uchar() [L133] input_56 = __VERIFIER_nondet_uchar() [L134] input_66 = __VERIFIER_nondet_uchar() [L135] input_72 = __VERIFIER_nondet_ushort() [L136] input_86 = __VERIFIER_nondet_uchar() [L137] input_92 = __VERIFIER_nondet_uchar() [L138] input_98 = __VERIFIER_nondet_uchar() [L139] input_104 = __VERIFIER_nondet_uchar() [L140] input_105 = __VERIFIER_nondet_uchar() [L141] input_106 = __VERIFIER_nondet_uchar() [L142] input_120 = __VERIFIER_nondet_uchar() [L143] input_122 = __VERIFIER_nondet_uchar() [L144] input_137 = __VERIFIER_nondet_uchar() [L145] input_138 = __VERIFIER_nondet_uchar() [L146] input_139 = __VERIFIER_nondet_uchar() [L149] SORT_7 var_12_arg_0 = state_9; [L150] SORT_11 var_12 = var_12_arg_0 >> 8; [L151] SORT_11 var_14_arg_0 = var_12; [L152] EXPR var_14_arg_0 & mask_SORT_11 [L152] var_14_arg_0 = var_14_arg_0 & mask_SORT_11 [L153] SORT_13 var_14 = var_14_arg_0; [L154] SORT_13 var_16_arg_0 = var_14; [L155] SORT_13 var_16_arg_1 = var_15; [L156] SORT_1 var_16 = var_16_arg_0 == var_16_arg_1; [L157] SORT_1 var_20_arg_0 = var_16; [L158] SORT_1 var_20 = ~var_20_arg_0; [L159] SORT_1 var_21_arg_0 = var_19; [L160] SORT_1 var_21_arg_1 = var_20; [L161] EXPR var_21_arg_0 & var_21_arg_1 [L161] SORT_1 var_21 = var_21_arg_0 & var_21_arg_1; [L162] EXPR var_21 & mask_SORT_1 [L162] var_21 = var_21 & mask_SORT_1 [L163] SORT_1 bad_22_arg_0 = var_21; [L164] CALL __VERIFIER_assert(!(bad_22_arg_0)) [L21] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L21] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.8s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-24 23:20:18,652 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b51e5b92-f9a8-46cf-974e-5f37fc085351/bin/utaipan-verify-SwPr7d2a91/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 Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b51e5b92-f9a8-46cf-974e-5f37fc085351/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b51e5b92-f9a8-46cf-974e-5f37fc085351/bin/utaipan-verify-SwPr7d2a91/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b51e5b92-f9a8-46cf-974e-5f37fc085351/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b51e5b92-f9a8-46cf-974e-5f37fc085351/bin/utaipan-verify-SwPr7d2a91/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p03.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b51e5b92-f9a8-46cf-974e-5f37fc085351/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b51e5b92-f9a8-46cf-974e-5f37fc085351/bin/utaipan-verify-SwPr7d2a91 --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 64bit --witnessprinter.graph.data.programhash 3b705ca0c5b5371dfb056caad606a25fce2d2b74615677865ff593635c093e46 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 23:20:21,334 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 23:20:21,467 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b51e5b92-f9a8-46cf-974e-5f37fc085351/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2023-11-24 23:20:21,490 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 23:20:21,491 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 23:20:21,535 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 23:20:21,536 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 23:20:21,536 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 23:20:21,538 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 23:20:21,543 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 23:20:21,543 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-24 23:20:21,544 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-24 23:20:21,544 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-24 23:20:21,546 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-24 23:20:21,547 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-24 23:20:21,548 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-24 23:20:21,549 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 23:20:21,549 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 23:20:21,550 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 23:20:21,551 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 23:20:21,552 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 23:20:21,552 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 23:20:21,553 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-24 23:20:21,553 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-24 23:20:21,554 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-24 23:20:21,554 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 23:20:21,555 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 23:20:21,555 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 23:20:21,555 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-24 23:20:21,556 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 23:20:21,557 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 23:20:21,558 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:20:21,558 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 23:20:21,559 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 23:20:21,559 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-24 23:20:21,559 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-24 23:20:21,559 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-24 23:20:21,560 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 23:20:21,560 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-24 23:20:21,561 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-24 23:20:21,561 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 23:20:21,562 INFO L153 SettingsManager]: * Logic for external solver=AUFBV 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_b51e5b92-f9a8-46cf-974e-5f37fc085351/bin/utaipan-verify-SwPr7d2a91/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b51e5b92-f9a8-46cf-974e-5f37fc085351/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3b705ca0c5b5371dfb056caad606a25fce2d2b74615677865ff593635c093e46 [2023-11-24 23:20:21,947 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 23:20:21,984 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 23:20:21,986 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 23:20:21,988 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 23:20:21,988 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 23:20:21,990 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b51e5b92-f9a8-46cf-974e-5f37fc085351/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p03.c [2023-11-24 23:20:25,196 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 23:20:25,518 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 23:20:25,519 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b51e5b92-f9a8-46cf-974e-5f37fc085351/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p03.c [2023-11-24 23:20:25,543 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b51e5b92-f9a8-46cf-974e-5f37fc085351/bin/utaipan-verify-SwPr7d2a91/data/765d85524/aadbae80a0bb4b5ba132bc84a1118fec/FLAG486d0140b [2023-11-24 23:20:25,568 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b51e5b92-f9a8-46cf-974e-5f37fc085351/bin/utaipan-verify-SwPr7d2a91/data/765d85524/aadbae80a0bb4b5ba132bc84a1118fec [2023-11-24 23:20:25,573 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 23:20:25,575 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 23:20:25,579 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 23:20:25,579 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 23:20:25,584 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 23:20:25,585 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:20:25" (1/1) ... [2023-11-24 23:20:25,587 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@504c81f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:20:25, skipping insertion in model container [2023-11-24 23:20:25,587 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:20:25" (1/1) ... [2023-11-24 23:20:25,648 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 23:20:25,857 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_b51e5b92-f9a8-46cf-974e-5f37fc085351/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p03.c[1266,1279] [2023-11-24 23:20:25,978 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:20:25,992 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 23:20:26,006 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_b51e5b92-f9a8-46cf-974e-5f37fc085351/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p03.c[1266,1279] [2023-11-24 23:20:26,128 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:20:26,151 INFO L206 MainTranslator]: Completed translation [2023-11-24 23:20:26,152 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:20:26 WrapperNode [2023-11-24 23:20:26,152 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 23:20:26,153 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 23:20:26,153 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 23:20:26,154 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 23:20:26,161 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:20:26" (1/1) ... [2023-11-24 23:20:26,186 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:20:26" (1/1) ... [2023-11-24 23:20:26,248 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 445 [2023-11-24 23:20:26,249 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 23:20:26,255 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 23:20:26,256 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 23:20:26,256 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 23:20:26,263 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:20:26" (1/1) ... [2023-11-24 23:20:26,264 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:20:26" (1/1) ... [2023-11-24 23:20:26,274 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:20:26" (1/1) ... [2023-11-24 23:20:26,275 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:20:26" (1/1) ... [2023-11-24 23:20:26,292 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:20:26" (1/1) ... [2023-11-24 23:20:26,296 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:20:26" (1/1) ... [2023-11-24 23:20:26,299 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:20:26" (1/1) ... [2023-11-24 23:20:26,303 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:20:26" (1/1) ... [2023-11-24 23:20:26,309 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 23:20:26,310 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 23:20:26,310 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 23:20:26,310 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 23:20:26,315 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:20:26" (1/1) ... [2023-11-24 23:20:26,334 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:20:26,349 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b51e5b92-f9a8-46cf-974e-5f37fc085351/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:20:26,361 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b51e5b92-f9a8-46cf-974e-5f37fc085351/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-24 23:20:26,383 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b51e5b92-f9a8-46cf-974e-5f37fc085351/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-24 23:20:26,410 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 23:20:26,411 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-24 23:20:26,411 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 23:20:26,411 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 23:20:26,645 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 23:20:26,647 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 23:20:27,169 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 23:20:27,227 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 23:20:27,227 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-24 23:20:27,228 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:20:27 BoogieIcfgContainer [2023-11-24 23:20:27,229 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 23:20:27,233 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 23:20:27,234 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 23:20:27,237 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 23:20:27,238 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 11:20:25" (1/3) ... [2023-11-24 23:20:27,238 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55a80f53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:20:27, skipping insertion in model container [2023-11-24 23:20:27,238 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:20:26" (2/3) ... [2023-11-24 23:20:27,240 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55a80f53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:20:27, skipping insertion in model container [2023-11-24 23:20:27,241 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:20:27" (3/3) ... [2023-11-24 23:20:27,242 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p03.c [2023-11-24 23:20:27,263 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 23:20:27,263 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-24 23:20:27,322 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 23:20:27,331 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;@1634fa3f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 23:20:27,332 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-24 23:20:27,337 INFO L276 IsEmpty]: Start isEmpty. Operand has 8 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 7 states have internal predecessors, (10), 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) [2023-11-24 23:20:27,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-24 23:20:27,344 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:20:27,346 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-24 23:20:27,347 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:20:27,354 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:20:27,354 INFO L85 PathProgramCache]: Analyzing trace with hash 1827279, now seen corresponding path program 1 times [2023-11-24 23:20:27,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-24 23:20:27,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1375398605] [2023-11-24 23:20:27,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:20:27,372 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 23:20:27,372 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b51e5b92-f9a8-46cf-974e-5f37fc085351/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-24 23:20:27,378 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b51e5b92-f9a8-46cf-974e-5f37fc085351/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 23:20:27,441 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b51e5b92-f9a8-46cf-974e-5f37fc085351/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-11-24 23:20:27,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:20:27,573 INFO L262 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-24 23:20:27,582 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:20:27,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:20:27,999 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:20:28,000 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-24 23:20:28,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1375398605] [2023-11-24 23:20:28,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1375398605] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:20:28,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:20:28,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 23:20:28,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006506229] [2023-11-24 23:20:28,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:20:28,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 23:20:28,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-24 23:20:28,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 23:20:28,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:20:28,054 INFO L87 Difference]: Start difference. First operand has 8 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2023-11-24 23:20:28,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:20:28,156 INFO L93 Difference]: Finished difference Result 16 states and 24 transitions. [2023-11-24 23:20:28,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 23:20:28,159 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2023-11-24 23:20:28,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:20:28,167 INFO L225 Difference]: With dead ends: 16 [2023-11-24 23:20:28,167 INFO L226 Difference]: Without dead ends: 9 [2023-11-24 23:20:28,170 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:20:28,174 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 3 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:20:28,176 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 6 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 23:20:28,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2023-11-24 23:20:28,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 8. [2023-11-24 23:20:28,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 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) [2023-11-24 23:20:28,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2023-11-24 23:20:28,210 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 4 [2023-11-24 23:20:28,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:20:28,211 INFO L495 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2023-11-24 23:20:28,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2023-11-24 23:20:28,211 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2023-11-24 23:20:28,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-24 23:20:28,212 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:20:28,212 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2023-11-24 23:20:28,224 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b51e5b92-f9a8-46cf-974e-5f37fc085351/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-11-24 23:20:28,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b51e5b92-f9a8-46cf-974e-5f37fc085351/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 23:20:28,416 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:20:28,416 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:20:28,416 INFO L85 PathProgramCache]: Analyzing trace with hash -1393329571, now seen corresponding path program 1 times [2023-11-24 23:20:28,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-24 23:20:28,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2057759646] [2023-11-24 23:20:28,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:20:28,418 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 23:20:28,418 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b51e5b92-f9a8-46cf-974e-5f37fc085351/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-24 23:20:28,420 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b51e5b92-f9a8-46cf-974e-5f37fc085351/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 23:20:28,423 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b51e5b92-f9a8-46cf-974e-5f37fc085351/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-11-24 23:20:28,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:20:28,750 INFO L262 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 29 conjunts are in the unsatisfiable core [2023-11-24 23:20:28,768 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:20:29,111 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:20:29,111 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:20:29,651 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:20:29,652 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-24 23:20:29,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2057759646] [2023-11-24 23:20:29,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2057759646] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:20:29,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1055570123] [2023-11-24 23:20:29,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:20:29,657 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-24 23:20:29,658 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b51e5b92-f9a8-46cf-974e-5f37fc085351/bin/utaipan-verify-SwPr7d2a91/cvc4 [2023-11-24 23:20:29,664 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b51e5b92-f9a8-46cf-974e-5f37fc085351/bin/utaipan-verify-SwPr7d2a91/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-24 23:20:29,678 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b51e5b92-f9a8-46cf-974e-5f37fc085351/bin/utaipan-verify-SwPr7d2a91/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2023-11-24 23:20:30,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:20:30,074 INFO L262 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 29 conjunts are in the unsatisfiable core [2023-11-24 23:20:30,080 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:20:30,299 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:20:30,299 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:20:30,681 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:20:30,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1055570123] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:20:30,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [764772151] [2023-11-24 23:20:30,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:20:30,682 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:20:30,682 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b51e5b92-f9a8-46cf-974e-5f37fc085351/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:20:30,688 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b51e5b92-f9a8-46cf-974e-5f37fc085351/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:20:30,701 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b51e5b92-f9a8-46cf-974e-5f37fc085351/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-24 23:20:30,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:20:30,890 INFO L262 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 32 conjunts are in the unsatisfiable core [2023-11-24 23:20:30,895 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:20:31,123 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:20:31,124 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:20:31,540 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:20:31,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [764772151] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:20:31,540 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-11-24 23:20:31,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 4, 5, 5] total 9 [2023-11-24 23:20:31,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737267361] [2023-11-24 23:20:31,542 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-11-24 23:20:31,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-24 23:20:31,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-24 23:20:31,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-24 23:20:31,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-24 23:20:31,545 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand has 10 states, 10 states have (on average 1.7) internal successors, (17), 9 states have internal predecessors, (17), 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) [2023-11-24 23:20:31,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:20:31,708 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2023-11-24 23:20:31,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-24 23:20:31,709 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.7) internal successors, (17), 9 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-11-24 23:20:31,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:20:31,710 INFO L225 Difference]: With dead ends: 14 [2023-11-24 23:20:31,710 INFO L226 Difference]: Without dead ends: 12 [2023-11-24 23:20:31,711 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 24 SyntacticMatches, 4 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2023-11-24 23:20:31,712 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 8 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:20:31,713 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 9 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 23:20:31,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2023-11-24 23:20:31,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 11. [2023-11-24 23:20:31,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:20:31,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2023-11-24 23:20:31,718 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 7 [2023-11-24 23:20:31,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:20:31,718 INFO L495 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2023-11-24 23:20:31,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.7) internal successors, (17), 9 states have internal predecessors, (17), 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) [2023-11-24 23:20:31,719 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2023-11-24 23:20:31,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-24 23:20:31,719 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:20:31,720 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1] [2023-11-24 23:20:31,729 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b51e5b92-f9a8-46cf-974e-5f37fc085351/bin/utaipan-verify-SwPr7d2a91/cvc4 --incremental --print-success --lang smt (4)] Forceful destruction successful, exit code 0 [2023-11-24 23:20:31,928 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b51e5b92-f9a8-46cf-974e-5f37fc085351/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-24 23:20:32,127 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b51e5b92-f9a8-46cf-974e-5f37fc085351/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-11-24 23:20:32,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b51e5b92-f9a8-46cf-974e-5f37fc085351/bin/utaipan-verify-SwPr7d2a91/cvc4 --incremental --print-success --lang smt,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b51e5b92-f9a8-46cf-974e-5f37fc085351/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b51e5b92-f9a8-46cf-974e-5f37fc085351/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 23:20:32,324 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:20:32,325 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:20:32,325 INFO L85 PathProgramCache]: Analyzing trace with hash -2112524529, now seen corresponding path program 2 times [2023-11-24 23:20:32,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-24 23:20:32,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [897861615] [2023-11-24 23:20:32,326 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-24 23:20:32,326 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 23:20:32,327 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b51e5b92-f9a8-46cf-974e-5f37fc085351/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-24 23:20:32,328 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b51e5b92-f9a8-46cf-974e-5f37fc085351/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 23:20:32,338 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b51e5b92-f9a8-46cf-974e-5f37fc085351/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-11-24 23:20:32,774 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-24 23:20:32,774 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-24 23:20:32,786 INFO L262 TraceCheckSpWp]: Trace formula consists of 511 conjuncts, 46 conjunts are in the unsatisfiable core [2023-11-24 23:20:32,794 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:20:33,159 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:20:33,160 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:20:36,180 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:20:36,181 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-24 23:20:36,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [897861615] [2023-11-24 23:20:36,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [897861615] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:20:36,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [375305682] [2023-11-24 23:20:36,182 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-24 23:20:36,182 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-24 23:20:36,182 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b51e5b92-f9a8-46cf-974e-5f37fc085351/bin/utaipan-verify-SwPr7d2a91/cvc4 [2023-11-24 23:20:36,183 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b51e5b92-f9a8-46cf-974e-5f37fc085351/bin/utaipan-verify-SwPr7d2a91/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-24 23:20:36,204 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b51e5b92-f9a8-46cf-974e-5f37fc085351/bin/utaipan-verify-SwPr7d2a91/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2023-11-24 23:20:36,706 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-24 23:20:36,707 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-24 23:20:36,733 INFO L262 TraceCheckSpWp]: Trace formula consists of 511 conjuncts, 47 conjunts are in the unsatisfiable core [2023-11-24 23:20:36,740 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:20:37,004 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:20:37,004 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:20:39,373 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:20:39,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [375305682] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:20:39,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1565959179] [2023-11-24 23:20:39,374 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-24 23:20:39,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:20:39,375 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b51e5b92-f9a8-46cf-974e-5f37fc085351/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:20:39,376 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b51e5b92-f9a8-46cf-974e-5f37fc085351/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:20:39,408 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b51e5b92-f9a8-46cf-974e-5f37fc085351/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-24 23:20:39,630 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-24 23:20:39,631 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-24 23:20:39,637 INFO L262 TraceCheckSpWp]: Trace formula consists of 511 conjuncts, 50 conjunts are in the unsatisfiable core [2023-11-24 23:20:39,642 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:20:39,961 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:20:39,962 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:20:42,707 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:20:42,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1565959179] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:20:42,708 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-11-24 23:20:42,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 6, 6] total 11 [2023-11-24 23:20:42,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556698220] [2023-11-24 23:20:42,708 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-11-24 23:20:42,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-24 23:20:42,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-24 23:20:42,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-24 23:20:42,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2023-11-24 23:20:42,711 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand has 12 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 11 states have internal predecessors, (23), 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) [2023-11-24 23:20:42,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:20:42,921 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2023-11-24 23:20:42,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-24 23:20:42,921 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 11 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-11-24 23:20:42,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:20:42,922 INFO L225 Difference]: With dead ends: 17 [2023-11-24 23:20:42,922 INFO L226 Difference]: Without dead ends: 15 [2023-11-24 23:20:42,923 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 38 SyntacticMatches, 6 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2023-11-24 23:20:42,924 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 12 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:20:42,924 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 8 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 23:20:42,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2023-11-24 23:20:42,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 14. [2023-11-24 23:20:42,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.0769230769230769) internal successors, (14), 13 states have internal predecessors, (14), 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) [2023-11-24 23:20:42,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2023-11-24 23:20:42,929 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 10 [2023-11-24 23:20:42,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:20:42,930 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2023-11-24 23:20:42,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 11 states have internal predecessors, (23), 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) [2023-11-24 23:20:42,930 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2023-11-24 23:20:42,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-24 23:20:42,931 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:20:42,931 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1] [2023-11-24 23:20:42,940 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b51e5b92-f9a8-46cf-974e-5f37fc085351/bin/utaipan-verify-SwPr7d2a91/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2023-11-24 23:20:43,138 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b51e5b92-f9a8-46cf-974e-5f37fc085351/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2023-11-24 23:20:43,340 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b51e5b92-f9a8-46cf-974e-5f37fc085351/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-24 23:20:43,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b51e5b92-f9a8-46cf-974e-5f37fc085351/bin/utaipan-verify-SwPr7d2a91/cvc4 --incremental --print-success --lang smt,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b51e5b92-f9a8-46cf-974e-5f37fc085351/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b51e5b92-f9a8-46cf-974e-5f37fc085351/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:20:43,536 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:20:43,536 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:20:43,536 INFO L85 PathProgramCache]: Analyzing trace with hash -57678563, now seen corresponding path program 3 times [2023-11-24 23:20:43,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-24 23:20:43,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [57520941] [2023-11-24 23:20:43,538 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-24 23:20:43,538 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 23:20:43,538 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b51e5b92-f9a8-46cf-974e-5f37fc085351/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-24 23:20:43,539 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b51e5b92-f9a8-46cf-974e-5f37fc085351/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 23:20:43,540 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b51e5b92-f9a8-46cf-974e-5f37fc085351/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-11-24 23:20:43,907 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-24 23:20:43,907 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-24 23:20:43,918 INFO L262 TraceCheckSpWp]: Trace formula consists of 511 conjuncts, 67 conjunts are in the unsatisfiable core [2023-11-24 23:20:43,924 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:20:45,125 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-24 23:20:45,126 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:20:50,076 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-24 23:20:50,077 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-24 23:20:50,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [57520941] [2023-11-24 23:20:50,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [57520941] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:20:50,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1911592054] [2023-11-24 23:20:50,077 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-24 23:20:50,078 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-24 23:20:50,078 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b51e5b92-f9a8-46cf-974e-5f37fc085351/bin/utaipan-verify-SwPr7d2a91/cvc4 [2023-11-24 23:20:50,084 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b51e5b92-f9a8-46cf-974e-5f37fc085351/bin/utaipan-verify-SwPr7d2a91/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-24 23:20:50,096 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b51e5b92-f9a8-46cf-974e-5f37fc085351/bin/utaipan-verify-SwPr7d2a91/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2023-11-24 23:20:50,613 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-24 23:20:50,614 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-24 23:20:50,642 INFO L262 TraceCheckSpWp]: Trace formula consists of 511 conjuncts, 67 conjunts are in the unsatisfiable core [2023-11-24 23:20:50,661 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:20:51,793 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-24 23:20:51,793 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:20:55,916 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-24 23:20:55,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1911592054] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:20:55,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [348965533] [2023-11-24 23:20:55,916 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-24 23:20:55,917 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:20:55,917 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b51e5b92-f9a8-46cf-974e-5f37fc085351/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:20:55,923 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b51e5b92-f9a8-46cf-974e-5f37fc085351/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:20:55,948 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b51e5b92-f9a8-46cf-974e-5f37fc085351/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-24 23:20:56,206 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-24 23:20:56,207 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-24 23:20:56,214 INFO L262 TraceCheckSpWp]: Trace formula consists of 511 conjuncts, 73 conjunts are in the unsatisfiable core [2023-11-24 23:20:56,221 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:20:57,363 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-24 23:20:57,368 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:21:02,922 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-24 23:21:02,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [348965533] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:21:02,923 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-11-24 23:21:02,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6, 6, 7, 6] total 18 [2023-11-24 23:21:02,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261125074] [2023-11-24 23:21:02,923 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-11-24 23:21:02,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-24 23:21:02,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-24 23:21:02,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-24 23:21:02,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2023-11-24 23:21:02,926 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand has 19 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 18 states have internal predecessors, (29), 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)