./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsaR_p14.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_410cf2d5-df4e-4853-84c1-c75e2e72e84e/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_410cf2d5-df4e-4853-84c1-c75e2e72e84e/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_410cf2d5-df4e-4853-84c1-c75e2e72e84e/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_410cf2d5-df4e-4853-84c1-c75e2e72e84e/bin/utaipan-verify-SwPr7d2a91/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsaR_p14.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_410cf2d5-df4e-4853-84c1-c75e2e72e84e/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_410cf2d5-df4e-4853-84c1-c75e2e72e84e/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 422986a7dcf99d4b0e96a15a0ba07b8ed6118724772e8af056de2de5bc5122f8 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 23:59:21,616 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 23:59:21,701 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_410cf2d5-df4e-4853-84c1-c75e2e72e84e/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-24 23:59:21,707 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 23:59:21,708 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 23:59:21,735 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 23:59:21,735 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 23:59:21,736 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 23:59:21,737 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 23:59:21,738 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 23:59:21,739 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-24 23:59:21,739 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-24 23:59:21,740 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-24 23:59:21,741 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-24 23:59:21,741 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-24 23:59:21,742 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-24 23:59:21,743 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-24 23:59:21,743 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-24 23:59:21,744 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-24 23:59:21,744 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-24 23:59:21,745 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-24 23:59:21,746 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-24 23:59:21,747 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 23:59:21,747 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 23:59:21,748 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 23:59:21,748 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 23:59:21,749 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 23:59:21,749 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 23:59:21,750 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 23:59:21,750 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 23:59:21,751 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 23:59:21,751 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 23:59:21,752 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 23:59:21,752 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 23:59:21,752 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:59:21,753 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 23:59:21,753 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 23:59:21,753 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-24 23:59:21,754 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-24 23:59:21,754 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 23:59:21,754 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 23:59:21,755 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-24 23:59:21,755 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-24 23:59:21,756 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 23:59:21,756 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_410cf2d5-df4e-4853-84c1-c75e2e72e84e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_410cf2d5-df4e-4853-84c1-c75e2e72e84e/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 422986a7dcf99d4b0e96a15a0ba07b8ed6118724772e8af056de2de5bc5122f8 [2023-11-24 23:59:22,074 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 23:59:22,111 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 23:59:22,113 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 23:59:22,115 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 23:59:22,115 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 23:59:22,116 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_410cf2d5-df4e-4853-84c1-c75e2e72e84e/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsaR_p14.c [2023-11-24 23:59:25,083 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 23:59:25,565 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 23:59:25,566 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_410cf2d5-df4e-4853-84c1-c75e2e72e84e/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsaR_p14.c [2023-11-24 23:59:25,583 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_410cf2d5-df4e-4853-84c1-c75e2e72e84e/bin/utaipan-verify-SwPr7d2a91/data/e850d7caf/1d9a11221c024369a8b90ea8c895d1ca/FLAG9729e0761 [2023-11-24 23:59:25,597 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_410cf2d5-df4e-4853-84c1-c75e2e72e84e/bin/utaipan-verify-SwPr7d2a91/data/e850d7caf/1d9a11221c024369a8b90ea8c895d1ca [2023-11-24 23:59:25,600 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 23:59:25,601 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 23:59:25,603 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 23:59:25,603 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 23:59:25,609 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 23:59:25,609 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:59:25" (1/1) ... [2023-11-24 23:59:25,611 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d315bed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:59:25, skipping insertion in model container [2023-11-24 23:59:25,611 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:59:25" (1/1) ... [2023-11-24 23:59:25,669 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 23:59:25,890 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_410cf2d5-df4e-4853-84c1-c75e2e72e84e/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsaR_p14.c[1259,1272] [2023-11-24 23:59:26,191 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:59:26,202 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 23:59:26,215 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_410cf2d5-df4e-4853-84c1-c75e2e72e84e/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsaR_p14.c[1259,1272] [2023-11-24 23:59:26,484 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:59:26,514 INFO L206 MainTranslator]: Completed translation [2023-11-24 23:59:26,514 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:59:26 WrapperNode [2023-11-24 23:59:26,514 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 23:59:26,515 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 23:59:26,516 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 23:59:26,516 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 23:59:26,524 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:59:26" (1/1) ... [2023-11-24 23:59:26,577 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:59:26" (1/1) ... [2023-11-24 23:59:26,882 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 2405 [2023-11-24 23:59:26,883 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 23:59:26,883 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 23:59:26,884 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 23:59:26,884 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 23:59:26,894 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:59:26" (1/1) ... [2023-11-24 23:59:26,894 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:59:26" (1/1) ... [2023-11-24 23:59:26,968 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:59:26" (1/1) ... [2023-11-24 23:59:26,968 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:59:26" (1/1) ... [2023-11-24 23:59:27,096 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:59:26" (1/1) ... [2023-11-24 23:59:27,122 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:59:26" (1/1) ... [2023-11-24 23:59:27,154 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:59:26" (1/1) ... [2023-11-24 23:59:27,172 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:59:26" (1/1) ... [2023-11-24 23:59:27,316 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 23:59:27,317 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 23:59:27,317 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 23:59:27,318 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 23:59:27,319 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:59:26" (1/1) ... [2023-11-24 23:59:27,325 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:59:27,338 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_410cf2d5-df4e-4853-84c1-c75e2e72e84e/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:59:27,356 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_410cf2d5-df4e-4853-84c1-c75e2e72e84e/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-24 23:59:27,387 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_410cf2d5-df4e-4853-84c1-c75e2e72e84e/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-24 23:59:27,409 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 23:59:27,409 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-24 23:59:27,409 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 23:59:27,409 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 23:59:27,761 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 23:59:27,763 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 23:59:29,989 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 23:59:33,928 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 23:59:33,928 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-24 23:59:33,930 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:59:33 BoogieIcfgContainer [2023-11-24 23:59:33,930 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 23:59:33,934 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 23:59:33,934 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 23:59:33,938 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 23:59:33,938 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 11:59:25" (1/3) ... [2023-11-24 23:59:33,940 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5eb47f48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:59:33, skipping insertion in model container [2023-11-24 23:59:33,940 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:59:26" (2/3) ... [2023-11-24 23:59:33,941 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5eb47f48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:59:33, skipping insertion in model container [2023-11-24 23:59:33,941 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:59:33" (3/3) ... [2023-11-24 23:59:33,942 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.vis_arrays_vsaR_p14.c [2023-11-24 23:59:33,965 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 23:59:33,965 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-24 23:59:34,025 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 23:59:34,034 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;@1a2de628, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 23:59:34,035 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-24 23:59:34,040 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 23:59:34,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-24 23:59:34,046 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:59:34,047 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-24 23:59:34,048 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:59:34,057 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:59:34,057 INFO L85 PathProgramCache]: Analyzing trace with hash 70878581, now seen corresponding path program 1 times [2023-11-24 23:59:34,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:59:34,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219572134] [2023-11-24 23:59:34,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:59:34,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:59:34,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 23:59:34,692 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-24 23:59:34,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 23:59:34,996 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-24 23:59:34,998 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-24 23:59:35,000 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-24 23:59:35,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-24 23:59:35,007 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-24 23:59:35,012 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-24 23:59:35,058 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2023-11-24 23:59:35,079 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.11 11:59:35 BoogieIcfgContainer [2023-11-24 23:59:35,079 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-24 23:59:35,079 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-24 23:59:35,079 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-24 23:59:35,080 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-24 23:59:35,080 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:59:33" (3/4) ... [2023-11-24 23:59:35,084 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-24 23:59:35,085 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-24 23:59:35,086 INFO L158 Benchmark]: Toolchain (without parser) took 9484.60ms. Allocated memory was 125.8MB in the beginning and 694.2MB in the end (delta: 568.3MB). Free memory was 93.6MB in the beginning and 485.8MB in the end (delta: -392.2MB). Peak memory consumption was 178.3MB. Max. memory is 16.1GB. [2023-11-24 23:59:35,087 INFO L158 Benchmark]: CDTParser took 1.11ms. Allocated memory is still 125.8MB. Free memory is still 84.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 23:59:35,088 INFO L158 Benchmark]: CACSL2BoogieTranslator took 911.85ms. Allocated memory was 125.8MB in the beginning and 159.4MB in the end (delta: 33.6MB). Free memory was 93.6MB in the beginning and 114.1MB in the end (delta: -20.4MB). Peak memory consumption was 48.0MB. Max. memory is 16.1GB. [2023-11-24 23:59:35,089 INFO L158 Benchmark]: Boogie Procedure Inliner took 367.50ms. Allocated memory is still 159.4MB. Free memory was 113.9MB in the beginning and 91.3MB in the end (delta: 22.7MB). Peak memory consumption was 57.7MB. Max. memory is 16.1GB. [2023-11-24 23:59:35,094 INFO L158 Benchmark]: Boogie Preprocessor took 432.58ms. Allocated memory is still 159.4MB. Free memory was 91.3MB in the beginning and 90.8MB in the end (delta: 512.5kB). Peak memory consumption was 30.8MB. Max. memory is 16.1GB. [2023-11-24 23:59:35,095 INFO L158 Benchmark]: RCFGBuilder took 6613.21ms. Allocated memory was 159.4MB in the beginning and 694.2MB in the end (delta: 534.8MB). Free memory was 90.8MB in the beginning and 557.1MB in the end (delta: -466.4MB). Peak memory consumption was 295.7MB. Max. memory is 16.1GB. [2023-11-24 23:59:35,097 INFO L158 Benchmark]: TraceAbstraction took 1144.77ms. Allocated memory is still 694.2MB. Free memory was 556.1MB in the beginning and 485.8MB in the end (delta: 70.3MB). Peak memory consumption was 71.3MB. Max. memory is 16.1GB. [2023-11-24 23:59:35,098 INFO L158 Benchmark]: Witness Printer took 5.63ms. Allocated memory is still 694.2MB. Free memory is still 485.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 23:59:35,106 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.11ms. Allocated memory is still 125.8MB. Free memory is still 84.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 911.85ms. Allocated memory was 125.8MB in the beginning and 159.4MB in the end (delta: 33.6MB). Free memory was 93.6MB in the beginning and 114.1MB in the end (delta: -20.4MB). Peak memory consumption was 48.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 367.50ms. Allocated memory is still 159.4MB. Free memory was 113.9MB in the beginning and 91.3MB in the end (delta: 22.7MB). Peak memory consumption was 57.7MB. Max. memory is 16.1GB. * Boogie Preprocessor took 432.58ms. Allocated memory is still 159.4MB. Free memory was 91.3MB in the beginning and 90.8MB in the end (delta: 512.5kB). Peak memory consumption was 30.8MB. Max. memory is 16.1GB. * RCFGBuilder took 6613.21ms. Allocated memory was 159.4MB in the beginning and 694.2MB in the end (delta: 534.8MB). Free memory was 90.8MB in the beginning and 557.1MB in the end (delta: -466.4MB). Peak memory consumption was 295.7MB. Max. memory is 16.1GB. * TraceAbstraction took 1144.77ms. Allocated memory is still 694.2MB. Free memory was 556.1MB in the beginning and 485.8MB in the end (delta: 70.3MB). Peak memory consumption was 71.3MB. Max. memory is 16.1GB. * Witness Printer took 5.63ms. Allocated memory is still 694.2MB. Free memory is still 485.8MB. 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 bitwiseOr at line 160, overapproximation of bitwiseAnd at line 150. 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 - 5); [L30] const SORT_3 msb_SORT_3 = (SORT_3)1 << (5 - 1); [L32] const SORT_5 mask_SORT_5 = (SORT_5)-1 >> (sizeof(SORT_5) * 8 - 12); [L33] const SORT_5 msb_SORT_5 = (SORT_5)1 << (12 - 1); [L35] const SORT_7 mask_SORT_7 = (SORT_7)-1 >> (sizeof(SORT_7) * 8 - 3); [L36] const SORT_7 msb_SORT_7 = (SORT_7)1 << (3 - 1); [L38] const SORT_78 mask_SORT_78 = (SORT_78)-1 >> (sizeof(SORT_78) * 8 - 32); [L39] const SORT_78 msb_SORT_78 = (SORT_78)1 << (32 - 1); [L41] const SORT_107 mask_SORT_107 = (SORT_107)-1 >> (sizeof(SORT_107) * 8 - 4); [L42] const SORT_107 msb_SORT_107 = (SORT_107)1 << (4 - 1); [L44] const SORT_174 mask_SORT_174 = (SORT_174)-1 >> (sizeof(SORT_174) * 8 - 2); [L45] const SORT_174 msb_SORT_174 = (SORT_174)1 << (2 - 1); [L47] const SORT_7 var_8 = 0; [L48] const SORT_5 var_12 = 0; [L49] const SORT_7 var_16 = 2; [L50] const SORT_1 var_19 = 0; [L51] const SORT_3 var_26 = 0; [L52] const SORT_1 var_35 = 1; [L53] const SORT_7 var_57 = 1; [L54] const SORT_7 var_62 = 4; [L55] const SORT_7 var_64 = 5; [L56] const SORT_7 var_68 = 3; [L57] const SORT_78 var_80 = 0; [L58] const SORT_3 var_94 = 2; [L59] const SORT_7 var_124 = 7; [L60] const SORT_7 var_129 = 6; [L61] const SORT_3 var_183 = 31; [L63] SORT_1 input_2; [L64] SORT_3 input_4; [L65] SORT_5 input_6; [L66] SORT_3 input_171; [L67] SORT_3 input_172; [L68] SORT_3 input_173; [L69] SORT_3 input_182; [L70] SORT_3 input_192; [L71] SORT_3 input_193; [L72] SORT_3 input_194; [L73] SORT_3 input_197; [L74] SORT_3 input_216; [L75] SORT_3 input_217; [L76] SORT_3 input_218; [L77] SORT_3 input_221; [L78] SORT_3 input_223; [L79] SORT_174 input_237; [L80] SORT_174 input_238; [L81] SORT_174 input_239; [L83] EXPR __VERIFIER_nondet_uchar() & mask_SORT_7 [L83] SORT_7 state_9 = __VERIFIER_nondet_uchar() & mask_SORT_7; [L84] EXPR __VERIFIER_nondet_ushort() & mask_SORT_5 [L84] SORT_5 state_13 = __VERIFIER_nondet_ushort() & mask_SORT_5; [L85] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L85] SORT_1 state_20 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L86] EXPR __VERIFIER_nondet_uchar() & mask_SORT_3 [L86] SORT_3 state_27 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L87] EXPR __VERIFIER_nondet_uchar() & mask_SORT_3 [L87] SORT_3 state_29 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L88] EXPR __VERIFIER_nondet_uchar() & mask_SORT_3 [L88] SORT_3 state_39 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L89] EXPR __VERIFIER_nondet_uchar() & mask_SORT_3 [L89] SORT_3 state_41 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L90] EXPR __VERIFIER_nondet_uchar() & mask_SORT_3 [L90] SORT_3 state_43 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L91] EXPR __VERIFIER_nondet_uchar() & mask_SORT_3 [L91] SORT_3 state_45 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L92] EXPR __VERIFIER_nondet_uchar() & mask_SORT_3 [L92] SORT_3 state_47 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L93] EXPR __VERIFIER_nondet_uchar() & mask_SORT_3 [L93] SORT_3 state_49 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L94] EXPR __VERIFIER_nondet_uchar() & mask_SORT_3 [L94] SORT_3 state_51 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L95] EXPR __VERIFIER_nondet_uchar() & mask_SORT_3 [L95] SORT_3 state_53 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L97] SORT_7 init_10_arg_1 = var_8; [L98] state_9 = init_10_arg_1 [L99] SORT_5 init_14_arg_1 = var_12; [L100] state_13 = init_14_arg_1 [L101] SORT_1 init_21_arg_1 = var_19; [L102] state_20 = init_21_arg_1 [L103] SORT_3 init_28_arg_1 = var_26; [L104] state_27 = init_28_arg_1 [L105] SORT_3 init_30_arg_1 = var_26; [L106] state_29 = init_30_arg_1 [L107] SORT_3 init_40_arg_1 = var_26; [L108] state_39 = init_40_arg_1 [L109] SORT_3 init_42_arg_1 = var_26; [L110] state_41 = init_42_arg_1 [L111] SORT_3 init_44_arg_1 = var_26; [L112] state_43 = init_44_arg_1 [L113] SORT_3 init_46_arg_1 = var_26; [L114] state_45 = init_46_arg_1 [L115] SORT_3 init_48_arg_1 = var_26; [L116] state_47 = init_48_arg_1 [L117] SORT_3 init_50_arg_1 = var_26; [L118] state_49 = init_50_arg_1 [L119] SORT_3 init_52_arg_1 = var_26; [L120] state_51 = init_52_arg_1 [L121] SORT_3 init_54_arg_1 = var_26; [L122] state_53 = init_54_arg_1 VAL [init_10_arg_1=0, init_14_arg_1=0, init_21_arg_1=0, init_28_arg_1=0, init_30_arg_1=0, init_40_arg_1=0, init_42_arg_1=0, init_44_arg_1=0, init_46_arg_1=0, init_48_arg_1=0, init_50_arg_1=0, init_52_arg_1=0, init_54_arg_1=0, mask_SORT_107=15, mask_SORT_174=3, mask_SORT_1=1, mask_SORT_3=31, mask_SORT_5=4095, mask_SORT_78=4294967295, mask_SORT_7=7, msb_SORT_107=8, msb_SORT_174=2, msb_SORT_1=1, msb_SORT_3=16, msb_SORT_5=2048, msb_SORT_78=2147483648, msb_SORT_7=4, state_13=0, state_20=0, state_27=0, state_29=0, state_39=0, state_41=0, state_43=0, state_45=0, state_47=0, state_49=0, state_51=0, state_53=0, state_9=0, var_124=7, var_129=6, var_12=0, var_16=2, var_183=31, var_19=0, var_26=0, var_35=1, var_57=1, var_62=4, var_64=5, var_68=3, var_80=0, var_8=0, var_94=2] [L125] input_2 = __VERIFIER_nondet_uchar() [L126] input_4 = __VERIFIER_nondet_uchar() [L127] input_6 = __VERIFIER_nondet_ushort() [L128] input_171 = __VERIFIER_nondet_uchar() [L129] input_172 = __VERIFIER_nondet_uchar() [L130] input_173 = __VERIFIER_nondet_uchar() [L131] input_182 = __VERIFIER_nondet_uchar() [L132] input_192 = __VERIFIER_nondet_uchar() [L133] input_193 = __VERIFIER_nondet_uchar() [L134] input_194 = __VERIFIER_nondet_uchar() [L135] input_197 = __VERIFIER_nondet_uchar() [L136] input_216 = __VERIFIER_nondet_uchar() [L137] input_217 = __VERIFIER_nondet_uchar() [L138] input_218 = __VERIFIER_nondet_uchar() [L139] input_221 = __VERIFIER_nondet_uchar() [L140] input_223 = __VERIFIER_nondet_uchar() [L141] input_237 = __VERIFIER_nondet_uchar() [L142] input_238 = __VERIFIER_nondet_uchar() [L143] input_239 = __VERIFIER_nondet_uchar() [L146] SORT_7 var_11_arg_0 = state_9; [L147] SORT_1 var_11 = var_11_arg_0 >> 2; [L148] SORT_5 var_15_arg_0 = state_13; [L149] SORT_7 var_15 = var_15_arg_0 >> 9; [L150] EXPR var_15 & mask_SORT_7 [L150] var_15 = var_15 & mask_SORT_7 [L151] SORT_7 var_17_arg_0 = var_15; [L152] SORT_7 var_17_arg_1 = var_16; [L153] SORT_1 var_17 = var_17_arg_0 == var_17_arg_1; [L154] SORT_1 var_18_arg_0 = var_17; [L155] SORT_1 var_18 = ~var_18_arg_0; [L156] SORT_1 var_22_arg_0 = state_20; [L157] SORT_1 var_22 = ~var_22_arg_0; [L158] SORT_1 var_23_arg_0 = var_18; [L159] SORT_1 var_23_arg_1 = var_22; [L160] EXPR var_23_arg_0 | var_23_arg_1 [L160] SORT_1 var_23 = var_23_arg_0 | var_23_arg_1; [L161] SORT_1 var_24_arg_0 = var_11; [L162] SORT_1 var_24_arg_1 = var_23; [L163] EXPR var_24_arg_0 & var_24_arg_1 [L163] SORT_1 var_24 = var_24_arg_0 & var_24_arg_1; [L164] SORT_1 var_25_arg_0 = var_24; [L165] SORT_1 var_25 = ~var_25_arg_0; [L166] SORT_3 var_31_arg_0 = state_27; [L167] SORT_3 var_31_arg_1 = state_29; [L168] SORT_1 var_31 = var_31_arg_0 == var_31_arg_1; [L169] SORT_1 var_32_arg_0 = var_25; [L170] SORT_1 var_32_arg_1 = var_31; [L171] EXPR var_32_arg_0 | var_32_arg_1 [L171] SORT_1 var_32 = var_32_arg_0 | var_32_arg_1; [L172] SORT_1 var_36_arg_0 = var_32; [L173] SORT_1 var_36 = ~var_36_arg_0; [L174] SORT_1 var_37_arg_0 = var_35; [L175] SORT_1 var_37_arg_1 = var_36; [L176] EXPR var_37_arg_0 & var_37_arg_1 [L176] SORT_1 var_37 = var_37_arg_0 & var_37_arg_1; [L177] EXPR var_37 & mask_SORT_1 [L177] var_37 = var_37 & mask_SORT_1 [L178] SORT_1 bad_38_arg_0 = var_37; [L179] CALL __VERIFIER_assert(!(bad_38_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: 1.0s, 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, 0.5s 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 23:59:35,130 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_410cf2d5-df4e-4853-84c1-c75e2e72e84e/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_410cf2d5-df4e-4853-84c1-c75e2e72e84e/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_410cf2d5-df4e-4853-84c1-c75e2e72e84e/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_410cf2d5-df4e-4853-84c1-c75e2e72e84e/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_410cf2d5-df4e-4853-84c1-c75e2e72e84e/bin/utaipan-verify-SwPr7d2a91/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsaR_p14.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_410cf2d5-df4e-4853-84c1-c75e2e72e84e/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_410cf2d5-df4e-4853-84c1-c75e2e72e84e/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 422986a7dcf99d4b0e96a15a0ba07b8ed6118724772e8af056de2de5bc5122f8 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 23:59:37,938 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 23:59:38,066 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_410cf2d5-df4e-4853-84c1-c75e2e72e84e/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2023-11-24 23:59:38,082 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 23:59:38,083 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 23:59:38,137 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 23:59:38,138 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 23:59:38,139 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 23:59:38,140 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 23:59:38,146 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 23:59:38,147 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-24 23:59:38,147 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-24 23:59:38,148 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-24 23:59:38,150 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-24 23:59:38,150 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-24 23:59:38,151 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-24 23:59:38,152 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 23:59:38,153 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 23:59:38,153 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 23:59:38,154 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 23:59:38,155 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 23:59:38,156 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 23:59:38,156 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-24 23:59:38,157 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-24 23:59:38,157 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-24 23:59:38,158 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 23:59:38,158 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 23:59:38,159 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 23:59:38,160 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-24 23:59:38,160 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 23:59:38,161 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 23:59:38,162 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:59:38,162 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 23:59:38,163 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 23:59:38,163 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-24 23:59:38,163 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-24 23:59:38,164 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-24 23:59:38,164 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 23:59:38,164 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-24 23:59:38,165 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-24 23:59:38,166 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 23:59:38,166 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_410cf2d5-df4e-4853-84c1-c75e2e72e84e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_410cf2d5-df4e-4853-84c1-c75e2e72e84e/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 422986a7dcf99d4b0e96a15a0ba07b8ed6118724772e8af056de2de5bc5122f8 [2023-11-24 23:59:38,628 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 23:59:38,663 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 23:59:38,666 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 23:59:38,668 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 23:59:38,668 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 23:59:38,670 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_410cf2d5-df4e-4853-84c1-c75e2e72e84e/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsaR_p14.c [2023-11-24 23:59:41,785 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 23:59:42,136 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 23:59:42,137 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_410cf2d5-df4e-4853-84c1-c75e2e72e84e/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsaR_p14.c [2023-11-24 23:59:42,152 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_410cf2d5-df4e-4853-84c1-c75e2e72e84e/bin/utaipan-verify-SwPr7d2a91/data/ad6b72a83/b42c7cb345e5428fa10eafdf4f7b93d7/FLAG0b63316ad [2023-11-24 23:59:42,168 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_410cf2d5-df4e-4853-84c1-c75e2e72e84e/bin/utaipan-verify-SwPr7d2a91/data/ad6b72a83/b42c7cb345e5428fa10eafdf4f7b93d7 [2023-11-24 23:59:42,170 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 23:59:42,172 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 23:59:42,173 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 23:59:42,174 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 23:59:42,179 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 23:59:42,180 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:59:42" (1/1) ... [2023-11-24 23:59:42,181 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77e10c7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:59:42, skipping insertion in model container [2023-11-24 23:59:42,181 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:59:42" (1/1) ... [2023-11-24 23:59:42,242 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 23:59:42,423 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_410cf2d5-df4e-4853-84c1-c75e2e72e84e/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsaR_p14.c[1259,1272] [2023-11-24 23:59:42,766 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:59:42,779 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 23:59:42,794 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_410cf2d5-df4e-4853-84c1-c75e2e72e84e/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsaR_p14.c[1259,1272] [2023-11-24 23:59:42,972 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:59:42,993 INFO L206 MainTranslator]: Completed translation [2023-11-24 23:59:42,999 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:59:42 WrapperNode [2023-11-24 23:59:43,000 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 23:59:43,001 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 23:59:43,004 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 23:59:43,004 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 23:59:43,018 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:59:42" (1/1) ... [2023-11-24 23:59:43,060 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:59:42" (1/1) ... [2023-11-24 23:59:43,183 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1081 [2023-11-24 23:59:43,184 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 23:59:43,184 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 23:59:43,184 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 23:59:43,185 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 23:59:43,196 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:59:42" (1/1) ... [2023-11-24 23:59:43,196 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:59:42" (1/1) ... [2023-11-24 23:59:43,225 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:59:42" (1/1) ... [2023-11-24 23:59:43,225 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:59:42" (1/1) ... [2023-11-24 23:59:43,276 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:59:42" (1/1) ... [2023-11-24 23:59:43,299 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:59:42" (1/1) ... [2023-11-24 23:59:43,306 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:59:42" (1/1) ... [2023-11-24 23:59:43,328 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:59:42" (1/1) ... [2023-11-24 23:59:43,338 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 23:59:43,339 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 23:59:43,340 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 23:59:43,340 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 23:59:43,341 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:59:42" (1/1) ... [2023-11-24 23:59:43,347 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:59:43,363 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_410cf2d5-df4e-4853-84c1-c75e2e72e84e/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:59:43,378 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_410cf2d5-df4e-4853-84c1-c75e2e72e84e/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-24 23:59:43,411 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_410cf2d5-df4e-4853-84c1-c75e2e72e84e/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-24 23:59:43,428 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 23:59:43,428 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-24 23:59:43,429 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 23:59:43,429 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 23:59:43,753 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 23:59:43,756 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 23:59:45,433 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 23:59:45,535 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 23:59:45,535 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-24 23:59:45,536 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:59:45 BoogieIcfgContainer [2023-11-24 23:59:45,536 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 23:59:45,541 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 23:59:45,541 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 23:59:45,545 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 23:59:45,546 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 11:59:42" (1/3) ... [2023-11-24 23:59:45,547 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d9eafcb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:59:45, skipping insertion in model container [2023-11-24 23:59:45,547 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:59:42" (2/3) ... [2023-11-24 23:59:45,549 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d9eafcb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:59:45, skipping insertion in model container [2023-11-24 23:59:45,549 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:59:45" (3/3) ... [2023-11-24 23:59:45,551 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.vis_arrays_vsaR_p14.c [2023-11-24 23:59:45,571 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 23:59:45,572 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-24 23:59:45,624 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 23:59:45,631 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;@49a3e293, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 23:59:45,631 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-24 23:59:45,636 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 23:59:45,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-24 23:59:45,642 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:59:45,643 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-24 23:59:45,643 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:59:45,649 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:59:45,649 INFO L85 PathProgramCache]: Analyzing trace with hash 1827279, now seen corresponding path program 1 times [2023-11-24 23:59:45,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-24 23:59:45,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [25926996] [2023-11-24 23:59:45,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:59:45,664 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 23:59:45,664 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_410cf2d5-df4e-4853-84c1-c75e2e72e84e/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-24 23:59:45,670 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_410cf2d5-df4e-4853-84c1-c75e2e72e84e/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 23:59:45,704 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_410cf2d5-df4e-4853-84c1-c75e2e72e84e/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 23:59:45,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:59:45,991 INFO L262 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-24 23:59:46,002 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:59:46,255 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 23:59:46,256 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:59:46,257 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-24 23:59:46,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [25926996] [2023-11-24 23:59:46,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [25926996] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:59:46,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:59:46,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 23:59:46,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403085821] [2023-11-24 23:59:46,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:59:46,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 23:59:46,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-24 23:59:46,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 23:59:46,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:59:46,314 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 23:59:46,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:59:46,491 INFO L93 Difference]: Finished difference Result 16 states and 24 transitions. [2023-11-24 23:59:46,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 23:59:46,496 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 23:59:46,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:59:46,504 INFO L225 Difference]: With dead ends: 16 [2023-11-24 23:59:46,504 INFO L226 Difference]: Without dead ends: 9 [2023-11-24 23:59:46,507 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 23:59:46,511 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, 0.2s IncrementalHoareTripleChecker+Time [2023-11-24 23:59:46,512 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 6 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-24 23:59:46,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2023-11-24 23:59:46,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 8. [2023-11-24 23:59:46,544 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 23:59:46,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2023-11-24 23:59:46,546 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 4 [2023-11-24 23:59:46,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:59:46,546 INFO L495 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2023-11-24 23:59:46,547 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 23:59:46,547 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2023-11-24 23:59:46,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-24 23:59:46,547 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:59:46,548 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2023-11-24 23:59:46,555 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_410cf2d5-df4e-4853-84c1-c75e2e72e84e/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 23:59:46,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_410cf2d5-df4e-4853-84c1-c75e2e72e84e/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 23:59:46,751 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:59:46,751 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:59:46,751 INFO L85 PathProgramCache]: Analyzing trace with hash -1393329571, now seen corresponding path program 1 times [2023-11-24 23:59:46,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-24 23:59:46,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [791871080] [2023-11-24 23:59:46,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:59:46,755 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 23:59:46,755 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_410cf2d5-df4e-4853-84c1-c75e2e72e84e/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-24 23:59:46,756 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_410cf2d5-df4e-4853-84c1-c75e2e72e84e/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 23:59:46,757 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_410cf2d5-df4e-4853-84c1-c75e2e72e84e/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 23:59:48,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:59:48,272 INFO L262 TraceCheckSpWp]: Trace formula consists of 936 conjuncts, 33 conjunts are in the unsatisfiable core [2023-11-24 23:59:48,283 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:59:48,512 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 23:59:48,513 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:59:48,843 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 23:59:48,844 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-24 23:59:48,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [791871080] [2023-11-24 23:59:48,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [791871080] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:59:48,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1156620013] [2023-11-24 23:59:48,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:59:48,845 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-24 23:59:48,845 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_410cf2d5-df4e-4853-84c1-c75e2e72e84e/bin/utaipan-verify-SwPr7d2a91/cvc4 [2023-11-24 23:59:48,876 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_410cf2d5-df4e-4853-84c1-c75e2e72e84e/bin/utaipan-verify-SwPr7d2a91/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-24 23:59:48,882 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_410cf2d5-df4e-4853-84c1-c75e2e72e84e/bin/utaipan-verify-SwPr7d2a91/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2023-11-24 23:59:49,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:59:49,973 INFO L262 TraceCheckSpWp]: Trace formula consists of 936 conjuncts, 48 conjunts are in the unsatisfiable core [2023-11-24 23:59:49,985 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:59:50,287 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 23:59:50,287 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:59:50,629 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 23:59:50,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1156620013] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:59:50,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [689650711] [2023-11-24 23:59:50,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:59:50,630 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:59:50,630 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_410cf2d5-df4e-4853-84c1-c75e2e72e84e/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:59:50,634 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_410cf2d5-df4e-4853-84c1-c75e2e72e84e/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:59:50,640 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_410cf2d5-df4e-4853-84c1-c75e2e72e84e/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-24 23:59:51,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:59:51,180 INFO L262 TraceCheckSpWp]: Trace formula consists of 936 conjuncts, 46 conjunts are in the unsatisfiable core [2023-11-24 23:59:51,192 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:59:51,567 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 23:59:51,568 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:59:51,985 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 23:59:51,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [689650711] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:59:51,985 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-11-24 23:59:51,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 5, 4, 6, 5] total 15 [2023-11-24 23:59:51,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138962519] [2023-11-24 23:59:51,988 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-11-24 23:59:51,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-24 23:59:51,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-24 23:59:51,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-24 23:59:51,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2023-11-24 23:59:51,994 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand has 16 states, 16 states have (on average 1.625) internal successors, (26), 15 states have internal predecessors, (26), 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 23:59:52,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:59:52,796 INFO L93 Difference]: Finished difference Result 17 states and 18 transitions. [2023-11-24 23:59:52,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-24 23:59:52,796 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.625) internal successors, (26), 15 states have internal predecessors, (26), 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 23:59:52,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:59:52,797 INFO L225 Difference]: With dead ends: 17 [2023-11-24 23:59:52,797 INFO L226 Difference]: Without dead ends: 15 [2023-11-24 23:59:52,798 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 19 SyntacticMatches, 3 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=126, Invalid=294, Unknown=0, NotChecked=0, Total=420 [2023-11-24 23:59:52,799 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 20 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-24 23:59:52,800 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 10 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-24 23:59:52,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2023-11-24 23:59:52,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 14. [2023-11-24 23:59:52,805 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 23:59:52,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2023-11-24 23:59:52,806 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 7 [2023-11-24 23:59:52,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:59:52,807 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2023-11-24 23:59:52,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.625) internal successors, (26), 15 states have internal predecessors, (26), 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 23:59:52,807 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2023-11-24 23:59:52,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-24 23:59:52,808 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:59:52,808 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1] [2023-11-24 23:59:52,822 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_410cf2d5-df4e-4853-84c1-c75e2e72e84e/bin/utaipan-verify-SwPr7d2a91/cvc4 --incremental --print-success --lang smt (4)] Forceful destruction successful, exit code 0 [2023-11-24 23:59:53,028 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_410cf2d5-df4e-4853-84c1-c75e2e72e84e/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-24 23:59:53,228 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_410cf2d5-df4e-4853-84c1-c75e2e72e84e/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 23:59:53,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_410cf2d5-df4e-4853-84c1-c75e2e72e84e/bin/utaipan-verify-SwPr7d2a91/cvc4 --incremental --print-success --lang smt,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_410cf2d5-df4e-4853-84c1-c75e2e72e84e/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_410cf2d5-df4e-4853-84c1-c75e2e72e84e/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 23:59:53,423 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:59:53,423 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:59:53,423 INFO L85 PathProgramCache]: Analyzing trace with hash -57678563, now seen corresponding path program 2 times [2023-11-24 23:59:53,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-24 23:59:53,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1503778980] [2023-11-24 23:59:53,430 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-24 23:59:53,430 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 23:59:53,430 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_410cf2d5-df4e-4853-84c1-c75e2e72e84e/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-24 23:59:53,432 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_410cf2d5-df4e-4853-84c1-c75e2e72e84e/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 23:59:53,438 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_410cf2d5-df4e-4853-84c1-c75e2e72e84e/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 [2023-11-25 00:00:02,390 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-25 00:00:02,390 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-25 00:00:02,439 INFO L262 TraceCheckSpWp]: Trace formula consists of 2604 conjuncts, 56 conjunts are in the unsatisfiable core [2023-11-25 00:00:02,462 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:00:02,869 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-25 00:00:02,869 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-25 00:00:04,956 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-25 00:00:04,956 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-25 00:00:04,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1503778980] [2023-11-25 00:00:04,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1503778980] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-25 00:00:04,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1788006887] [2023-11-25 00:00:04,957 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-25 00:00:04,958 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-25 00:00:04,958 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_410cf2d5-df4e-4853-84c1-c75e2e72e84e/bin/utaipan-verify-SwPr7d2a91/cvc4 [2023-11-25 00:00:04,963 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_410cf2d5-df4e-4853-84c1-c75e2e72e84e/bin/utaipan-verify-SwPr7d2a91/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-25 00:00:04,966 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_410cf2d5-df4e-4853-84c1-c75e2e72e84e/bin/utaipan-verify-SwPr7d2a91/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2023-11-25 00:00:07,252 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-25 00:00:07,252 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-25 00:00:07,336 INFO L262 TraceCheckSpWp]: Trace formula consists of 2604 conjuncts, 60 conjunts are in the unsatisfiable core [2023-11-25 00:00:07,354 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:00:07,925 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-25 00:00:07,925 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-25 00:00:09,351 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-25 00:00:09,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1788006887] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-25 00:00:09,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1013363450] [2023-11-25 00:00:09,353 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-25 00:00:09,353 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:00:09,353 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_410cf2d5-df4e-4853-84c1-c75e2e72e84e/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:00:09,354 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_410cf2d5-df4e-4853-84c1-c75e2e72e84e/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-25 00:00:09,358 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_410cf2d5-df4e-4853-84c1-c75e2e72e84e/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-25 00:00:10,332 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-25 00:00:10,332 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-25 00:00:10,358 INFO L262 TraceCheckSpWp]: Trace formula consists of 2604 conjuncts, 182 conjunts are in the unsatisfiable core [2023-11-25 00:00:10,383 INFO L285 TraceCheckSpWp]: Computing forward predicates...