./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_Vending.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_a1c06ce0-57ea-406f-b550-88a33301d22d/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1c06ce0-57ea-406f-b550-88a33301d22d/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_a1c06ce0-57ea-406f-b550-88a33301d22d/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1c06ce0-57ea-406f-b550-88a33301d22d/bin/utaipan-verify-SwPr7d2a91/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_Vending.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1c06ce0-57ea-406f-b550-88a33301d22d/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_a1c06ce0-57ea-406f-b550-88a33301d22d/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 6b894aafaf217d6baa0c5f761ec3f51539bf2a720cb529b8ece9095e2a660f16 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 23:14:21,064 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 23:14:21,220 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1c06ce0-57ea-406f-b550-88a33301d22d/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-24 23:14:21,230 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 23:14:21,231 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 23:14:21,286 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 23:14:21,287 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 23:14:21,287 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 23:14:21,289 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 23:14:21,295 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 23:14:21,296 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-24 23:14:21,297 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-24 23:14:21,298 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-24 23:14:21,300 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-24 23:14:21,300 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-24 23:14:21,301 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-24 23:14:21,301 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-24 23:14:21,302 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-24 23:14:21,303 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-24 23:14:21,303 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-24 23:14:21,305 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-24 23:14:21,306 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-24 23:14:21,307 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 23:14:21,308 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 23:14:21,308 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 23:14:21,309 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 23:14:21,309 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 23:14:21,310 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 23:14:21,310 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 23:14:21,311 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 23:14:21,313 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 23:14:21,313 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 23:14:21,313 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 23:14:21,314 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 23:14:21,314 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:14:21,315 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 23:14:21,315 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 23:14:21,315 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-24 23:14:21,315 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-24 23:14:21,316 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 23:14:21,316 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 23:14:21,317 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-24 23:14:21,317 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-24 23:14:21,317 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 23:14:21,318 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_a1c06ce0-57ea-406f-b550-88a33301d22d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1c06ce0-57ea-406f-b550-88a33301d22d/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6b894aafaf217d6baa0c5f761ec3f51539bf2a720cb529b8ece9095e2a660f16 [2023-11-24 23:14:21,769 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 23:14:21,806 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 23:14:21,809 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 23:14:21,810 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 23:14:21,811 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 23:14:21,813 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1c06ce0-57ea-406f-b550-88a33301d22d/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_Vending.c [2023-11-24 23:14:25,345 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 23:14:25,813 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 23:14:25,814 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1c06ce0-57ea-406f-b550-88a33301d22d/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_Vending.c [2023-11-24 23:14:25,850 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1c06ce0-57ea-406f-b550-88a33301d22d/bin/utaipan-verify-SwPr7d2a91/data/ca482f807/664264acdcf8472d917f9eaa15b03a08/FLAGbc6fe7f8f [2023-11-24 23:14:25,874 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1c06ce0-57ea-406f-b550-88a33301d22d/bin/utaipan-verify-SwPr7d2a91/data/ca482f807/664264acdcf8472d917f9eaa15b03a08 [2023-11-24 23:14:25,879 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 23:14:25,882 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 23:14:25,885 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 23:14:25,885 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 23:14:25,892 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 23:14:25,893 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:14:25" (1/1) ... [2023-11-24 23:14:25,894 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ca1cd9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:14:25, skipping insertion in model container [2023-11-24 23:14:25,895 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:14:25" (1/1) ... [2023-11-24 23:14:26,026 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 23:14:26,260 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_a1c06ce0-57ea-406f-b550-88a33301d22d/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_Vending.c[1249,1262] [2023-11-24 23:14:26,625 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:14:26,644 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 23:14:26,655 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_a1c06ce0-57ea-406f-b550-88a33301d22d/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_Vending.c[1249,1262] [2023-11-24 23:14:26,916 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:14:26,940 INFO L206 MainTranslator]: Completed translation [2023-11-24 23:14:26,940 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:14:26 WrapperNode [2023-11-24 23:14:26,941 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 23:14:26,942 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 23:14:26,943 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 23:14:26,943 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 23:14:26,951 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:14:26" (1/1) ... [2023-11-24 23:14:27,026 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:14:26" (1/1) ... [2023-11-24 23:14:27,253 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 2378 [2023-11-24 23:14:27,254 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 23:14:27,255 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 23:14:27,255 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 23:14:27,255 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 23:14:27,266 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:14:26" (1/1) ... [2023-11-24 23:14:27,267 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:14:26" (1/1) ... [2023-11-24 23:14:27,305 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:14:26" (1/1) ... [2023-11-24 23:14:27,305 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:14:26" (1/1) ... [2023-11-24 23:14:27,400 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:14:26" (1/1) ... [2023-11-24 23:14:27,510 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:14:26" (1/1) ... [2023-11-24 23:14:27,566 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:14:26" (1/1) ... [2023-11-24 23:14:27,586 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:14:26" (1/1) ... [2023-11-24 23:14:27,647 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 23:14:27,648 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 23:14:27,649 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 23:14:27,650 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 23:14:27,651 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:14:26" (1/1) ... [2023-11-24 23:14:27,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:14:27,676 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1c06ce0-57ea-406f-b550-88a33301d22d/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:14:27,699 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1c06ce0-57ea-406f-b550-88a33301d22d/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-24 23:14:27,788 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1c06ce0-57ea-406f-b550-88a33301d22d/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-24 23:14:27,810 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 23:14:27,810 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-24 23:14:27,811 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 23:14:27,811 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 23:14:28,248 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 23:14:28,251 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 23:14:30,383 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 23:14:33,624 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 23:14:33,624 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-24 23:14:33,627 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:14:33 BoogieIcfgContainer [2023-11-24 23:14:33,627 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 23:14:33,630 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 23:14:33,631 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 23:14:33,635 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 23:14:33,635 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 11:14:25" (1/3) ... [2023-11-24 23:14:33,636 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22b1878 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:14:33, skipping insertion in model container [2023-11-24 23:14:33,637 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:14:26" (2/3) ... [2023-11-24 23:14:33,639 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22b1878 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:14:33, skipping insertion in model container [2023-11-24 23:14:33,640 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:14:33" (3/3) ... [2023-11-24 23:14:33,642 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.h_Vending.c [2023-11-24 23:14:33,667 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 23:14:33,667 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-24 23:14:33,726 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 23:14:33,734 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;@7f8843bf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 23:14:33,735 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-24 23:14:33,740 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 23:14:33,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-24 23:14:33,747 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:14:33,748 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-24 23:14:33,749 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:14:33,756 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:14:33,756 INFO L85 PathProgramCache]: Analyzing trace with hash 41434683, now seen corresponding path program 1 times [2023-11-24 23:14:33,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:14:33,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959520586] [2023-11-24 23:14:33,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:14:33,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:14:38,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 23:14:38,251 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-24 23:14:41,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 23:14:41,587 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-24 23:14:41,589 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-24 23:14:41,591 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-24 23:14:41,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-24 23:14:41,600 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-24 23:14:41,606 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-24 23:14:41,675 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2023-11-24 23:14:41,723 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.11 11:14:41 BoogieIcfgContainer [2023-11-24 23:14:41,728 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-24 23:14:41,730 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-24 23:14:41,730 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-24 23:14:41,731 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-24 23:14:41,731 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:14:33" (3/4) ... [2023-11-24 23:14:41,736 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-24 23:14:41,738 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-24 23:14:41,740 INFO L158 Benchmark]: Toolchain (without parser) took 15857.08ms. Allocated memory was 115.3MB in the beginning and 1.0GB in the end (delta: 899.7MB). Free memory was 60.3MB in the beginning and 664.5MB in the end (delta: -604.3MB). Peak memory consumption was 295.7MB. Max. memory is 16.1GB. [2023-11-24 23:14:41,740 INFO L158 Benchmark]: CDTParser took 1.47ms. Allocated memory is still 115.3MB. Free memory is still 88.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 23:14:41,742 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1056.21ms. Allocated memory was 115.3MB in the beginning and 151.0MB in the end (delta: 35.7MB). Free memory was 60.0MB in the beginning and 107.4MB in the end (delta: -47.4MB). Peak memory consumption was 33.5MB. Max. memory is 16.1GB. [2023-11-24 23:14:41,743 INFO L158 Benchmark]: Boogie Procedure Inliner took 312.26ms. Allocated memory is still 151.0MB. Free memory was 107.4MB in the beginning and 68.2MB in the end (delta: 39.1MB). Peak memory consumption was 39.8MB. Max. memory is 16.1GB. [2023-11-24 23:14:41,749 INFO L158 Benchmark]: Boogie Preprocessor took 392.21ms. Allocated memory is still 151.0MB. Free memory was 68.2MB in the beginning and 84.1MB in the end (delta: -15.9MB). Peak memory consumption was 32.5MB. Max. memory is 16.1GB. [2023-11-24 23:14:41,750 INFO L158 Benchmark]: RCFGBuilder took 5978.76ms. Allocated memory was 151.0MB in the beginning and 507.5MB in the end (delta: 356.5MB). Free memory was 83.6MB in the beginning and 285.0MB in the end (delta: -201.4MB). Peak memory consumption was 210.7MB. Max. memory is 16.1GB. [2023-11-24 23:14:41,752 INFO L158 Benchmark]: TraceAbstraction took 8097.75ms. Allocated memory was 507.5MB in the beginning and 1.0GB in the end (delta: 507.5MB). Free memory was 284.0MB in the beginning and 664.5MB in the end (delta: -380.6MB). Peak memory consumption was 176.2MB. Max. memory is 16.1GB. [2023-11-24 23:14:41,753 INFO L158 Benchmark]: Witness Printer took 7.86ms. Allocated memory is still 1.0GB. Free memory is still 664.5MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 23:14:41,762 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.47ms. Allocated memory is still 115.3MB. Free memory is still 88.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1056.21ms. Allocated memory was 115.3MB in the beginning and 151.0MB in the end (delta: 35.7MB). Free memory was 60.0MB in the beginning and 107.4MB in the end (delta: -47.4MB). Peak memory consumption was 33.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 312.26ms. Allocated memory is still 151.0MB. Free memory was 107.4MB in the beginning and 68.2MB in the end (delta: 39.1MB). Peak memory consumption was 39.8MB. Max. memory is 16.1GB. * Boogie Preprocessor took 392.21ms. Allocated memory is still 151.0MB. Free memory was 68.2MB in the beginning and 84.1MB in the end (delta: -15.9MB). Peak memory consumption was 32.5MB. Max. memory is 16.1GB. * RCFGBuilder took 5978.76ms. Allocated memory was 151.0MB in the beginning and 507.5MB in the end (delta: 356.5MB). Free memory was 83.6MB in the beginning and 285.0MB in the end (delta: -201.4MB). Peak memory consumption was 210.7MB. Max. memory is 16.1GB. * TraceAbstraction took 8097.75ms. Allocated memory was 507.5MB in the beginning and 1.0GB in the end (delta: 507.5MB). Free memory was 284.0MB in the beginning and 664.5MB in the end (delta: -380.6MB). Peak memory consumption was 176.2MB. Max. memory is 16.1GB. * Witness Printer took 7.86ms. Allocated memory is still 1.0GB. Free memory is still 664.5MB. 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 260, overapproximation of bitwiseAnd at line 167. 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_4 mask_SORT_4 = (SORT_4)-1 >> (sizeof(SORT_4) * 8 - 2); [L30] const SORT_4 msb_SORT_4 = (SORT_4)1 << (2 - 1); [L32] const SORT_9 mask_SORT_9 = (SORT_9)-1 >> (sizeof(SORT_9) * 8 - 4); [L33] const SORT_9 msb_SORT_9 = (SORT_9)1 << (4 - 1); [L35] const SORT_10 mask_SORT_10 = (SORT_10)-1 >> (sizeof(SORT_10) * 8 - 3); [L36] const SORT_10 msb_SORT_10 = (SORT_10)1 << (3 - 1); [L38] const SORT_10 var_11 = 0; [L39] const SORT_1 var_14 = 0; [L40] const SORT_4 var_16 = 0; [L41] const SORT_9 var_33 = 8; [L42] const SORT_9 var_40 = 7; [L43] const SORT_4 var_52 = 1; [L44] const SORT_1 var_56 = 1; [L45] const SORT_4 var_66 = 2; [L46] const SORT_9 var_72 = 0; [L47] const SORT_4 var_79 = 3; [L48] const SORT_9 var_98 = 5; [L49] const SORT_10 var_120 = 1; [L50] const SORT_9 var_122 = 15; [L51] const SORT_9 var_150 = 6; [L52] const SORT_9 var_315 = 1; [L54] SORT_1 input_2; [L55] SORT_1 input_3; [L56] SORT_4 input_5; [L57] SORT_1 input_6; [L58] SORT_1 input_7; [L59] SORT_1 input_8; [L60] SORT_4 input_103; [L61] SORT_10 input_116; [L62] SORT_10 input_117; [L63] SORT_10 input_118; [L64] SORT_10 input_119; [L65] SORT_10 input_128; [L66] SORT_10 input_135; [L67] SORT_10 input_142; [L68] SORT_10 input_143; [L69] SORT_10 input_144; [L70] SORT_10 input_149; [L71] SORT_10 input_153; [L72] SORT_10 input_159; [L73] SORT_4 input_174; [L74] SORT_4 input_175; [L75] SORT_4 input_176; [L76] SORT_4 input_177; [L77] SORT_4 input_184; [L78] SORT_4 input_187; [L79] SORT_4 input_195; [L80] SORT_4 input_202; [L81] SORT_4 input_203; [L82] SORT_4 input_204; [L83] SORT_4 input_207; [L84] SORT_4 input_209; [L85] SORT_4 input_214; [L86] SORT_4 input_223; [L87] SORT_1 input_235; [L88] SORT_1 input_236; [L89] SORT_1 input_237; [L90] SORT_1 input_238; [L91] SORT_1 input_245; [L92] SORT_1 input_248; [L93] SORT_1 input_251; [L94] SORT_1 input_261; [L95] SORT_4 input_276; [L96] SORT_4 input_280; [L97] SORT_4 input_281; [L98] SORT_4 input_282; [L99] SORT_4 input_283; [L100] SORT_4 input_287; [L101] SORT_4 input_292; [L102] SORT_4 input_301; [L103] SORT_9 input_311; [L104] SORT_9 input_312; [L105] SORT_9 input_313; [L106] SORT_9 input_314; [L107] SORT_9 input_320; [L108] SORT_9 input_326; [L109] SORT_9 input_333; [L110] SORT_9 input_334; [L111] SORT_9 input_335; [L112] SORT_9 input_338; [L113] SORT_9 input_340; [L114] SORT_9 input_344; [L115] SORT_9 input_345; [L116] SORT_9 input_349; [L117] SORT_9 input_354; [L118] SORT_9 input_372; [L119] SORT_9 input_373; [L120] SORT_9 input_374; [L121] SORT_9 input_375; [L122] SORT_9 input_380; [L123] SORT_9 input_383; [L124] SORT_9 input_391; [L125] SORT_9 input_398; [L126] SORT_9 input_399; [L127] SORT_9 input_400; [L128] SORT_9 input_403; [L129] SORT_9 input_405; [L130] SORT_9 input_410; [L131] SORT_9 input_419; [L132] SORT_9 input_430; [L133] SORT_9 input_431; [L134] SORT_9 input_432; [L135] SORT_9 input_433; [L136] SORT_9 input_438; [L137] SORT_9 input_441; [L138] SORT_9 input_444; [L139] SORT_9 input_454; [L141] EXPR __VERIFIER_nondet_uchar() & mask_SORT_10 [L141] SORT_10 state_12 = __VERIFIER_nondet_uchar() & mask_SORT_10; [L142] EXPR __VERIFIER_nondet_uchar() & mask_SORT_4 [L142] SORT_4 state_17 = __VERIFIER_nondet_uchar() & mask_SORT_4; [L143] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L143] SORT_1 state_22 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L144] EXPR __VERIFIER_nondet_uchar() & mask_SORT_4 [L144] SORT_4 state_50 = __VERIFIER_nondet_uchar() & mask_SORT_4; [L145] EXPR __VERIFIER_nondet_uchar() & mask_SORT_9 [L145] SORT_9 state_73 = __VERIFIER_nondet_uchar() & mask_SORT_9; [L146] EXPR __VERIFIER_nondet_uchar() & mask_SORT_4 [L146] SORT_4 state_96 = __VERIFIER_nondet_uchar() & mask_SORT_4; [L147] EXPR __VERIFIER_nondet_uchar() & mask_SORT_9 [L147] SORT_9 state_111 = __VERIFIER_nondet_uchar() & mask_SORT_9; [L148] EXPR __VERIFIER_nondet_uchar() & mask_SORT_9 [L148] SORT_9 state_113 = __VERIFIER_nondet_uchar() & mask_SORT_9; [L150] SORT_10 init_13_arg_1 = var_11; [L151] state_12 = init_13_arg_1 [L152] SORT_4 init_18_arg_1 = var_16; [L153] state_17 = init_18_arg_1 [L154] SORT_1 init_23_arg_1 = var_14; [L155] state_22 = init_23_arg_1 [L156] SORT_4 init_51_arg_1 = var_16; [L157] state_50 = init_51_arg_1 [L158] SORT_9 init_74_arg_1 = var_72; [L159] state_73 = init_74_arg_1 [L160] SORT_9 init_112_arg_1 = var_72; [L161] state_111 = init_112_arg_1 [L162] SORT_9 init_114_arg_1 = var_72; [L163] state_113 = init_114_arg_1 VAL [init_112_arg_1=0, init_114_arg_1=0, init_13_arg_1=0, init_18_arg_1=0, init_23_arg_1=0, init_51_arg_1=0, init_74_arg_1=0, mask_SORT_10=7, mask_SORT_1=1, mask_SORT_4=3, mask_SORT_9=15, msb_SORT_10=4, msb_SORT_1=1, msb_SORT_4=2, msb_SORT_9=8, state_111=0, state_113=0, state_12=0, state_17=0, state_22=0, state_50=0, state_73=0, state_96=3, var_11=0, var_120=1, var_122=15, var_14=0, var_150=6, var_16=0, var_315=1, var_33=8, var_40=7, var_52=1, var_56=1, var_66=2, var_72=0, var_79=3, var_98=5] [L166] input_2 = __VERIFIER_nondet_uchar() [L167] EXPR input_2 & mask_SORT_1 [L167] input_2 = input_2 & mask_SORT_1 [L168] input_3 = __VERIFIER_nondet_uchar() [L169] input_5 = __VERIFIER_nondet_uchar() [L170] input_6 = __VERIFIER_nondet_uchar() [L171] EXPR input_6 & mask_SORT_1 [L171] input_6 = input_6 & mask_SORT_1 [L172] input_7 = __VERIFIER_nondet_uchar() [L173] EXPR input_7 & mask_SORT_1 [L173] input_7 = input_7 & mask_SORT_1 [L174] input_8 = __VERIFIER_nondet_uchar() [L175] EXPR input_8 & mask_SORT_1 [L175] input_8 = input_8 & mask_SORT_1 [L176] input_103 = __VERIFIER_nondet_uchar() [L177] input_116 = __VERIFIER_nondet_uchar() [L178] input_117 = __VERIFIER_nondet_uchar() [L179] input_118 = __VERIFIER_nondet_uchar() [L180] input_119 = __VERIFIER_nondet_uchar() [L181] input_128 = __VERIFIER_nondet_uchar() [L182] input_135 = __VERIFIER_nondet_uchar() [L183] input_142 = __VERIFIER_nondet_uchar() [L184] input_143 = __VERIFIER_nondet_uchar() [L185] input_144 = __VERIFIER_nondet_uchar() [L186] input_149 = __VERIFIER_nondet_uchar() [L187] input_153 = __VERIFIER_nondet_uchar() [L188] input_159 = __VERIFIER_nondet_uchar() [L189] input_174 = __VERIFIER_nondet_uchar() [L190] input_175 = __VERIFIER_nondet_uchar() [L191] input_176 = __VERIFIER_nondet_uchar() [L192] input_177 = __VERIFIER_nondet_uchar() [L193] input_184 = __VERIFIER_nondet_uchar() [L194] input_187 = __VERIFIER_nondet_uchar() [L195] input_195 = __VERIFIER_nondet_uchar() [L196] input_202 = __VERIFIER_nondet_uchar() [L197] input_203 = __VERIFIER_nondet_uchar() [L198] input_204 = __VERIFIER_nondet_uchar() [L199] input_207 = __VERIFIER_nondet_uchar() [L200] input_209 = __VERIFIER_nondet_uchar() [L201] input_214 = __VERIFIER_nondet_uchar() [L202] input_223 = __VERIFIER_nondet_uchar() [L203] input_235 = __VERIFIER_nondet_uchar() [L204] input_236 = __VERIFIER_nondet_uchar() [L205] input_237 = __VERIFIER_nondet_uchar() [L206] input_238 = __VERIFIER_nondet_uchar() [L207] input_245 = __VERIFIER_nondet_uchar() [L208] input_248 = __VERIFIER_nondet_uchar() [L209] input_251 = __VERIFIER_nondet_uchar() [L210] input_261 = __VERIFIER_nondet_uchar() [L211] input_276 = __VERIFIER_nondet_uchar() [L212] input_280 = __VERIFIER_nondet_uchar() [L213] input_281 = __VERIFIER_nondet_uchar() [L214] input_282 = __VERIFIER_nondet_uchar() [L215] input_283 = __VERIFIER_nondet_uchar() [L216] input_287 = __VERIFIER_nondet_uchar() [L217] input_292 = __VERIFIER_nondet_uchar() [L218] input_301 = __VERIFIER_nondet_uchar() [L219] input_311 = __VERIFIER_nondet_uchar() [L220] input_312 = __VERIFIER_nondet_uchar() [L221] input_313 = __VERIFIER_nondet_uchar() [L222] input_314 = __VERIFIER_nondet_uchar() [L223] input_320 = __VERIFIER_nondet_uchar() [L224] input_326 = __VERIFIER_nondet_uchar() [L225] input_333 = __VERIFIER_nondet_uchar() [L226] input_334 = __VERIFIER_nondet_uchar() [L227] input_335 = __VERIFIER_nondet_uchar() [L228] input_338 = __VERIFIER_nondet_uchar() [L229] input_340 = __VERIFIER_nondet_uchar() [L230] input_344 = __VERIFIER_nondet_uchar() [L231] input_345 = __VERIFIER_nondet_uchar() [L232] input_349 = __VERIFIER_nondet_uchar() [L233] input_354 = __VERIFIER_nondet_uchar() [L234] input_372 = __VERIFIER_nondet_uchar() [L235] input_373 = __VERIFIER_nondet_uchar() [L236] input_374 = __VERIFIER_nondet_uchar() [L237] input_375 = __VERIFIER_nondet_uchar() [L238] input_380 = __VERIFIER_nondet_uchar() [L239] input_383 = __VERIFIER_nondet_uchar() [L240] input_391 = __VERIFIER_nondet_uchar() [L241] input_398 = __VERIFIER_nondet_uchar() [L242] input_399 = __VERIFIER_nondet_uchar() [L243] input_400 = __VERIFIER_nondet_uchar() [L244] input_403 = __VERIFIER_nondet_uchar() [L245] input_405 = __VERIFIER_nondet_uchar() [L246] input_410 = __VERIFIER_nondet_uchar() [L247] input_419 = __VERIFIER_nondet_uchar() [L248] input_430 = __VERIFIER_nondet_uchar() [L249] input_431 = __VERIFIER_nondet_uchar() [L250] input_432 = __VERIFIER_nondet_uchar() [L251] input_433 = __VERIFIER_nondet_uchar() [L252] input_438 = __VERIFIER_nondet_uchar() [L253] input_441 = __VERIFIER_nondet_uchar() [L254] input_444 = __VERIFIER_nondet_uchar() [L255] input_454 = __VERIFIER_nondet_uchar() [L258] SORT_1 var_15_arg_0 = var_14; [L259] SORT_10 var_15_arg_1 = state_12; [L260] EXPR ((SORT_9)var_15_arg_0 << 3) | var_15_arg_1 [L260] SORT_9 var_15 = ((SORT_9)var_15_arg_0 << 3) | var_15_arg_1; [L261] SORT_4 var_19_arg_0 = state_17; [L262] SORT_1 var_19_arg_1 = var_14; [L263] EXPR ((SORT_10)var_19_arg_0 << 1) | var_19_arg_1 [L263] SORT_10 var_19 = ((SORT_10)var_19_arg_0 << 1) | var_19_arg_1; [L264] EXPR var_19 & mask_SORT_10 [L264] var_19 = var_19 & mask_SORT_10 [L265] SORT_1 var_20_arg_0 = var_14; [L266] SORT_10 var_20_arg_1 = var_19; [L267] EXPR ((SORT_9)var_20_arg_0 << 3) | var_20_arg_1 [L267] SORT_9 var_20 = ((SORT_9)var_20_arg_0 << 3) | var_20_arg_1; [L268] SORT_9 var_21_arg_0 = var_15; [L269] SORT_9 var_21_arg_1 = var_20; [L270] SORT_9 var_21 = var_21_arg_0 + var_21_arg_1; [L271] SORT_1 var_24_arg_0 = var_14; [L272] SORT_1 var_24_arg_1 = state_22; [L273] EXPR ((SORT_4)var_24_arg_0 << 1) | var_24_arg_1 [L273] SORT_4 var_24 = ((SORT_4)var_24_arg_0 << 1) | var_24_arg_1; [L274] EXPR var_24 & mask_SORT_4 [L274] var_24 = var_24 & mask_SORT_4 [L275] SORT_1 var_25_arg_0 = state_22; [L276] SORT_4 var_25_arg_1 = var_24; [L277] EXPR ((SORT_10)var_25_arg_0 << 2) | var_25_arg_1 [L277] SORT_10 var_25 = ((SORT_10)var_25_arg_0 << 2) | var_25_arg_1; [L278] EXPR var_25 & mask_SORT_10 [L278] var_25 = var_25 & mask_SORT_10 [L279] SORT_1 var_26_arg_0 = var_14; [L280] SORT_10 var_26_arg_1 = var_25; [L281] EXPR ((SORT_9)var_26_arg_0 << 3) | var_26_arg_1 [L281] SORT_9 var_26 = ((SORT_9)var_26_arg_0 << 3) | var_26_arg_1; [L282] SORT_9 var_27_arg_0 = var_21; [L283] SORT_9 var_27_arg_1 = var_26; [L284] SORT_9 var_27 = var_27_arg_0 + var_27_arg_1; [L285] EXPR var_27 & mask_SORT_9 [L285] var_27 = var_27 & mask_SORT_9 [L286] SORT_9 var_28_arg_0 = var_27; [L287] SORT_1 var_28 = var_28_arg_0 >> 3; [L288] EXPR var_28 & mask_SORT_1 [L288] var_28 = var_28 & mask_SORT_1 [L289] SORT_1 var_29_arg_0 = var_28; [L290] SORT_1 var_29_arg_1 = var_14; [L291] SORT_1 var_29 = var_29_arg_0 == var_29_arg_1; [L292] SORT_9 var_30_arg_0 = var_27; [L293] SORT_4 var_30 = var_30_arg_0 >> 1; [L294] EXPR var_30 & mask_SORT_4 [L294] var_30 = var_30 & mask_SORT_4 [L295] SORT_4 var_31_arg_0 = var_30; [L296] SORT_4 var_31_arg_1 = var_16; [L297] SORT_1 var_31 = var_31_arg_0 == var_31_arg_1; [L298] SORT_1 var_32_arg_0 = var_29; [L299] SORT_1 var_32_arg_1 = var_31; [L300] EXPR var_32_arg_0 | var_32_arg_1 [L300] SORT_1 var_32 = var_32_arg_0 | var_32_arg_1; [L301] SORT_9 var_34_arg_0 = var_27; [L302] SORT_9 var_34_arg_1 = var_33; [L303] SORT_1 var_34 = var_34_arg_0 == var_34_arg_1; [L304] SORT_1 var_35_arg_0 = var_34; [L305] SORT_1 var_35 = ~var_35_arg_0; [L306] SORT_10 var_36_arg_0 = state_12; [L307] SORT_10 var_36_arg_1 = var_11; [L308] SORT_1 var_36 = var_36_arg_0 == var_36_arg_1; [L309] SORT_1 var_37_arg_0 = var_36; [L310] SORT_1 var_37 = ~var_37_arg_0; [L311] SORT_1 var_38_arg_0 = var_35; [L312] SORT_1 var_38_arg_1 = var_37; [L313] EXPR var_38_arg_0 | var_38_arg_1 [L313] SORT_1 var_38 = var_38_arg_0 | var_38_arg_1; [L314] SORT_1 var_39_arg_0 = var_32; [L315] SORT_1 var_39_arg_1 = var_38; [L316] EXPR var_39_arg_0 & var_39_arg_1 [L316] SORT_1 var_39 = var_39_arg_0 & var_39_arg_1; [L317] SORT_9 var_41_arg_0 = var_27; [L318] SORT_9 var_41_arg_1 = var_40; [L319] SORT_1 var_41 = var_41_arg_0 == var_41_arg_1; [L320] SORT_1 var_42_arg_0 = var_41; [L321] SORT_1 var_42 = ~var_42_arg_0; [L322] SORT_10 var_43_arg_0 = state_12; [L323] SORT_10 var_43_arg_1 = var_11; [L324] SORT_1 var_43 = var_43_arg_0 == var_43_arg_1; [L325] SORT_1 var_44_arg_0 = var_43; [L326] SORT_1 var_44 = ~var_44_arg_0; [L327] SORT_4 var_45_arg_0 = state_17; [L328] SORT_4 var_45_arg_1 = var_16; [L329] SORT_1 var_45 = var_45_arg_0 == var_45_arg_1; [L330] SORT_1 var_46_arg_0 = var_45; [L331] SORT_1 var_46 = ~var_46_arg_0; [L332] SORT_1 var_47_arg_0 = var_44; [L333] SORT_1 var_47_arg_1 = var_46; [L334] EXPR var_47_arg_0 | var_47_arg_1 [L334] SORT_1 var_47 = var_47_arg_0 | var_47_arg_1; [L335] SORT_1 var_48_arg_0 = var_42; [L336] SORT_1 var_48_arg_1 = var_47; [L337] EXPR var_48_arg_0 | var_48_arg_1 [L337] SORT_1 var_48 = var_48_arg_0 | var_48_arg_1; [L338] SORT_1 var_49_arg_0 = var_39; [L339] SORT_1 var_49_arg_1 = var_48; [L340] EXPR var_49_arg_0 & var_49_arg_1 [L340] SORT_1 var_49 = var_49_arg_0 & var_49_arg_1; [L341] SORT_4 var_53_arg_0 = state_50; [L342] SORT_4 var_53_arg_1 = var_52; [L343] SORT_1 var_53 = var_53_arg_0 == var_53_arg_1; [L344] SORT_9 var_54_arg_0 = var_27; [L345] SORT_9 var_54_arg_1 = var_40; [L346] SORT_1 var_54 = var_54_arg_0 == var_54_arg_1; [L347] SORT_1 var_55_arg_0 = var_53; [L348] SORT_1 var_55_arg_1 = var_54; [L349] EXPR var_55_arg_0 & var_55_arg_1 [L349] SORT_1 var_55 = var_55_arg_0 & var_55_arg_1; [L350] SORT_1 var_57_arg_0 = var_28; [L351] SORT_1 var_57_arg_1 = var_56; [L352] SORT_1 var_57 = var_57_arg_0 == var_57_arg_1; [L353] SORT_1 var_58_arg_0 = var_55; [L354] SORT_1 var_58_arg_1 = var_57; [L355] EXPR var_58_arg_0 | var_58_arg_1 [L355] SORT_1 var_58 = var_58_arg_0 | var_58_arg_1; [L356] SORT_1 var_59_arg_0 = var_58; [L357] SORT_1 var_59 = ~var_59_arg_0; [L358] SORT_10 var_60_arg_0 = state_12; [L359] SORT_10 var_60_arg_1 = var_11; [L360] SORT_1 var_60 = var_60_arg_0 == var_60_arg_1; [L361] SORT_4 var_61_arg_0 = state_17; [L362] SORT_4 var_61_arg_1 = var_16; [L363] SORT_1 var_61 = var_61_arg_0 == var_61_arg_1; [L364] SORT_1 var_62_arg_0 = var_60; [L365] SORT_1 var_62_arg_1 = var_61; [L366] EXPR var_62_arg_0 & var_62_arg_1 [L366] SORT_1 var_62 = var_62_arg_0 & var_62_arg_1; [L367] SORT_1 var_63_arg_0 = var_62; [L368] SORT_1 var_63 = ~var_63_arg_0; [L369] SORT_1 var_64_arg_0 = var_59; [L370] SORT_1 var_64_arg_1 = var_63; [L371] EXPR var_64_arg_0 | var_64_arg_1 [L371] SORT_1 var_64 = var_64_arg_0 | var_64_arg_1; [L372] SORT_1 var_65_arg_0 = var_49; [L373] SORT_1 var_65_arg_1 = var_64; [L374] EXPR var_65_arg_0 & var_65_arg_1 [L374] SORT_1 var_65 = var_65_arg_0 & var_65_arg_1; [L375] SORT_4 var_67_arg_0 = state_50; [L376] SORT_4 var_67_arg_1 = var_66; [L377] SORT_1 var_67 = var_67_arg_0 == var_67_arg_1; [L378] SORT_1 var_68_arg_0 = var_67; [L379] SORT_1 var_68 = ~var_68_arg_0; [L380] SORT_1 var_69_arg_0 = state_22; [L381] SORT_1 var_69_arg_1 = var_14; [L382] SORT_1 var_69 = var_69_arg_0 == var_69_arg_1; [L383] SORT_10 var_70_arg_0 = state_12; [L384] SORT_10 var_70_arg_1 = var_11; [L385] SORT_1 var_70 = var_70_arg_0 == var_70_arg_1; [L386] SORT_1 var_71_arg_0 = var_69; [L387] SORT_1 var_71_arg_1 = var_70; [L388] EXPR var_71_arg_0 & var_71_arg_1 [L388] SORT_1 var_71 = var_71_arg_0 & var_71_arg_1; [L389] SORT_9 var_75_arg_0 = state_73; [L390] SORT_9 var_75_arg_1 = var_72; [L391] SORT_1 var_75 = var_75_arg_0 == var_75_arg_1; [L392] SORT_1 var_76_arg_0 = var_71; [L393] SORT_1 var_76_arg_1 = var_75; [L394] EXPR var_76_arg_0 & var_76_arg_1 [L394] SORT_1 var_76 = var_76_arg_0 & var_76_arg_1; [L395] SORT_1 var_77_arg_0 = var_68; [L396] SORT_1 var_77_arg_1 = var_76; [L397] EXPR var_77_arg_0 | var_77_arg_1 [L397] SORT_1 var_77 = var_77_arg_0 | var_77_arg_1; [L398] SORT_1 var_78_arg_0 = var_65; [L399] SORT_1 var_78_arg_1 = var_77; [L400] EXPR var_78_arg_0 & var_78_arg_1 [L400] SORT_1 var_78 = var_78_arg_0 & var_78_arg_1; [L401] SORT_4 var_80_arg_0 = state_50; [L402] SORT_4 var_80_arg_1 = var_79; [L403] SORT_1 var_80 = var_80_arg_0 == var_80_arg_1; [L404] SORT_1 var_81_arg_0 = var_80; [L405] SORT_1 var_81 = ~var_81_arg_0; [L406] SORT_9 var_82_arg_0 = var_27; [L407] SORT_4 var_82 = var_82_arg_0 >> 2; [L408] EXPR var_82 & mask_SORT_4 [L408] var_82 = var_82 & mask_SORT_4 [L409] SORT_4 var_83_arg_0 = var_82; [L410] SORT_4 var_83_arg_1 = var_52; [L411] SORT_1 var_83 = var_83_arg_0 == var_83_arg_1; [L412] SORT_9 var_84_arg_0 = var_27; [L413] SORT_4 var_84 = var_84_arg_0 >> 0; [L414] EXPR var_84 & mask_SORT_4 [L414] var_84 = var_84 & mask_SORT_4 [L415] SORT_4 var_85_arg_0 = var_84; [L416] SORT_4 var_85_arg_1 = var_52; [L417] SORT_1 var_85 = var_85_arg_0 == var_85_arg_1; [L418] SORT_4 var_86_arg_0 = var_84; [L419] SORT_4 var_86_arg_1 = var_66; [L420] SORT_1 var_86 = var_86_arg_0 == var_86_arg_1; [L421] SORT_1 var_87_arg_0 = var_85; [L422] SORT_1 var_87_arg_1 = var_86; [L423] EXPR var_87_arg_0 | var_87_arg_1 [L423] SORT_1 var_87 = var_87_arg_0 | var_87_arg_1; [L424] SORT_1 var_88_arg_0 = var_83; [L425] SORT_1 var_88_arg_1 = var_87; [L426] EXPR var_88_arg_0 & var_88_arg_1 [L426] SORT_1 var_88 = var_88_arg_0 & var_88_arg_1; [L427] SORT_1 var_89_arg_0 = var_81; [L428] SORT_1 var_89_arg_1 = var_88; [L429] EXPR var_89_arg_0 | var_89_arg_1 [L429] SORT_1 var_89 = var_89_arg_0 | var_89_arg_1; [L430] SORT_1 var_90_arg_0 = var_78; [L431] SORT_1 var_90_arg_1 = var_89; [L432] EXPR var_90_arg_0 & var_90_arg_1 [L432] SORT_1 var_90 = var_90_arg_0 & var_90_arg_1; [L433] SORT_1 var_93_arg_0 = var_90; [L434] SORT_1 var_93 = ~var_93_arg_0; [L435] SORT_1 var_94_arg_0 = var_56; [L436] SORT_1 var_94_arg_1 = var_93; [L437] EXPR var_94_arg_0 & var_94_arg_1 [L437] SORT_1 var_94 = var_94_arg_0 & var_94_arg_1; [L438] EXPR var_94 & mask_SORT_1 [L438] var_94 = var_94 & mask_SORT_1 [L439] SORT_1 bad_95_arg_0 = var_94; [L440] CALL __VERIFIER_assert(!(bad_95_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: 7.9s, 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, 4.3s 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 23:14:41,805 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1c06ce0-57ea-406f-b550-88a33301d22d/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_a1c06ce0-57ea-406f-b550-88a33301d22d/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1c06ce0-57ea-406f-b550-88a33301d22d/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_a1c06ce0-57ea-406f-b550-88a33301d22d/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1c06ce0-57ea-406f-b550-88a33301d22d/bin/utaipan-verify-SwPr7d2a91/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_Vending.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1c06ce0-57ea-406f-b550-88a33301d22d/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_a1c06ce0-57ea-406f-b550-88a33301d22d/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 6b894aafaf217d6baa0c5f761ec3f51539bf2a720cb529b8ece9095e2a660f16 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 23:14:44,794 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 23:14:44,979 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1c06ce0-57ea-406f-b550-88a33301d22d/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2023-11-24 23:14:44,990 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 23:14:44,991 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 23:14:45,047 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 23:14:45,049 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 23:14:45,049 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 23:14:45,051 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 23:14:45,058 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 23:14:45,058 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-24 23:14:45,059 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-24 23:14:45,060 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-24 23:14:45,062 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-24 23:14:45,063 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-24 23:14:45,063 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-24 23:14:45,065 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 23:14:45,066 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 23:14:45,066 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 23:14:45,067 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 23:14:45,067 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 23:14:45,068 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 23:14:45,069 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-24 23:14:45,069 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-24 23:14:45,070 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-24 23:14:45,070 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 23:14:45,071 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 23:14:45,072 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 23:14:45,072 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-24 23:14:45,073 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 23:14:45,075 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 23:14:45,075 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:14:45,076 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 23:14:45,077 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 23:14:45,077 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-24 23:14:45,078 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-24 23:14:45,078 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-24 23:14:45,078 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 23:14:45,079 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-24 23:14:45,080 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-24 23:14:45,080 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 23:14:45,081 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_a1c06ce0-57ea-406f-b550-88a33301d22d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1c06ce0-57ea-406f-b550-88a33301d22d/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6b894aafaf217d6baa0c5f761ec3f51539bf2a720cb529b8ece9095e2a660f16 [2023-11-24 23:14:45,511 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 23:14:45,544 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 23:14:45,547 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 23:14:45,549 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 23:14:45,549 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 23:14:45,551 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1c06ce0-57ea-406f-b550-88a33301d22d/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_Vending.c [2023-11-24 23:14:49,389 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 23:14:49,869 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 23:14:49,869 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1c06ce0-57ea-406f-b550-88a33301d22d/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_Vending.c [2023-11-24 23:14:49,891 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1c06ce0-57ea-406f-b550-88a33301d22d/bin/utaipan-verify-SwPr7d2a91/data/cfa2de585/cc5e19e09c094d3a9c669d3a1b00e79a/FLAG2e87f7b15 [2023-11-24 23:14:49,915 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1c06ce0-57ea-406f-b550-88a33301d22d/bin/utaipan-verify-SwPr7d2a91/data/cfa2de585/cc5e19e09c094d3a9c669d3a1b00e79a [2023-11-24 23:14:49,921 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 23:14:49,923 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 23:14:49,927 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 23:14:49,927 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 23:14:49,932 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 23:14:49,933 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:14:49" (1/1) ... [2023-11-24 23:14:49,934 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f17b453 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:14:49, skipping insertion in model container [2023-11-24 23:14:49,934 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:14:49" (1/1) ... [2023-11-24 23:14:50,026 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 23:14:50,255 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_a1c06ce0-57ea-406f-b550-88a33301d22d/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_Vending.c[1249,1262] [2023-11-24 23:14:50,739 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:14:50,753 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 23:14:50,767 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_a1c06ce0-57ea-406f-b550-88a33301d22d/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_Vending.c[1249,1262] [2023-11-24 23:14:50,928 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:14:50,982 INFO L206 MainTranslator]: Completed translation [2023-11-24 23:14:50,984 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:14:50 WrapperNode [2023-11-24 23:14:50,984 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 23:14:50,986 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 23:14:50,986 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 23:14:50,986 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 23:14:50,997 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:14:50" (1/1) ... [2023-11-24 23:14:51,084 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:14:50" (1/1) ... [2023-11-24 23:14:51,245 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1588 [2023-11-24 23:14:51,245 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 23:14:51,247 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 23:14:51,247 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 23:14:51,248 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 23:14:51,260 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:14:50" (1/1) ... [2023-11-24 23:14:51,260 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:14:50" (1/1) ... [2023-11-24 23:14:51,287 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:14:50" (1/1) ... [2023-11-24 23:14:51,287 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:14:50" (1/1) ... [2023-11-24 23:14:51,374 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:14:50" (1/1) ... [2023-11-24 23:14:51,410 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:14:50" (1/1) ... [2023-11-24 23:14:51,421 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:14:50" (1/1) ... [2023-11-24 23:14:51,440 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:14:50" (1/1) ... [2023-11-24 23:14:51,481 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 23:14:51,482 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 23:14:51,483 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 23:14:51,484 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 23:14:51,485 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:14:50" (1/1) ... [2023-11-24 23:14:51,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:14:51,508 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1c06ce0-57ea-406f-b550-88a33301d22d/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:14:51,524 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1c06ce0-57ea-406f-b550-88a33301d22d/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-24 23:14:51,544 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1c06ce0-57ea-406f-b550-88a33301d22d/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-24 23:14:51,578 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 23:14:51,579 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-24 23:14:51,579 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 23:14:51,579 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 23:14:52,060 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 23:14:52,062 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 23:14:54,480 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 23:14:54,630 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 23:14:54,630 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-24 23:14:54,631 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:14:54 BoogieIcfgContainer [2023-11-24 23:14:54,631 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 23:14:54,638 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 23:14:54,639 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 23:14:54,643 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 23:14:54,643 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 11:14:49" (1/3) ... [2023-11-24 23:14:54,644 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7370d2c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:14:54, skipping insertion in model container [2023-11-24 23:14:54,645 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:14:50" (2/3) ... [2023-11-24 23:14:54,647 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7370d2c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:14:54, skipping insertion in model container [2023-11-24 23:14:54,647 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:14:54" (3/3) ... [2023-11-24 23:14:54,649 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.h_Vending.c [2023-11-24 23:14:54,675 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 23:14:54,675 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-24 23:14:54,748 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 23:14:54,760 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;@a5227dd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 23:14:54,761 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-24 23:14:54,766 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 23:14:54,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-24 23:14:54,775 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:14:54,776 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-24 23:14:54,776 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:14:54,783 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:14:54,784 INFO L85 PathProgramCache]: Analyzing trace with hash 1827279, now seen corresponding path program 1 times [2023-11-24 23:14:54,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-24 23:14:54,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2102807697] [2023-11-24 23:14:54,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:14:54,804 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 23:14:54,804 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1c06ce0-57ea-406f-b550-88a33301d22d/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-24 23:14:54,808 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1c06ce0-57ea-406f-b550-88a33301d22d/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 23:14:54,843 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1c06ce0-57ea-406f-b550-88a33301d22d/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 23:14:55,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:14:55,518 INFO L262 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 114 conjunts are in the unsatisfiable core [2023-11-24 23:14:55,540 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:14:58,792 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 23:14:58,793 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:14:58,794 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-24 23:14:58,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2102807697] [2023-11-24 23:14:58,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2102807697] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:14:58,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:14:58,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 23:14:58,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108036640] [2023-11-24 23:14:58,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:14:58,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 23:14:58,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-24 23:14:58,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 23:14:58,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:14:58,845 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 23:14:59,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:14:59,160 INFO L93 Difference]: Finished difference Result 16 states and 24 transitions. [2023-11-24 23:14:59,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 23:14:59,163 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 23:14:59,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:14:59,171 INFO L225 Difference]: With dead ends: 16 [2023-11-24 23:14:59,171 INFO L226 Difference]: Without dead ends: 9 [2023-11-24 23:14:59,173 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:14:59,178 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 3 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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 23:14:59,180 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 23:14:59,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2023-11-24 23:14:59,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 8. [2023-11-24 23:14:59,209 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 23:14:59,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2023-11-24 23:14:59,212 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 4 [2023-11-24 23:14:59,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:14:59,213 INFO L495 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2023-11-24 23:14:59,213 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 23:14:59,213 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2023-11-24 23:14:59,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-24 23:14:59,214 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:14:59,214 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2023-11-24 23:14:59,232 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1c06ce0-57ea-406f-b550-88a33301d22d/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 23:14:59,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1c06ce0-57ea-406f-b550-88a33301d22d/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 23:14:59,423 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:14:59,423 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:14:59,423 INFO L85 PathProgramCache]: Analyzing trace with hash -1393329571, now seen corresponding path program 1 times [2023-11-24 23:14:59,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-24 23:14:59,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [757279289] [2023-11-24 23:14:59,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:14:59,427 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 23:14:59,427 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1c06ce0-57ea-406f-b550-88a33301d22d/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-24 23:14:59,428 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1c06ce0-57ea-406f-b550-88a33301d22d/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 23:14:59,470 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1c06ce0-57ea-406f-b550-88a33301d22d/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 23:15:03,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:15:03,456 INFO L262 TraceCheckSpWp]: Trace formula consists of 1366 conjuncts, 359 conjunts are in the unsatisfiable core [2023-11-24 23:15:03,490 INFO L285 TraceCheckSpWp]: Computing forward predicates...