./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_BufAl.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8df7075e-ac1d-4ae0-acd8-dff18ea22ac0/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8df7075e-ac1d-4ae0-acd8-dff18ea22ac0/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8df7075e-ac1d-4ae0-acd8-dff18ea22ac0/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8df7075e-ac1d-4ae0-acd8-dff18ea22ac0/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_BufAl.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8df7075e-ac1d-4ae0-acd8-dff18ea22ac0/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8df7075e-ac1d-4ae0-acd8-dff18ea22ac0/bin/utaipan-verify-nQ1chXbOIh --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 5cca11703f101d148385abb3e7759c3ab61c77d034554827e4ca1c3d0123761f --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 17:56:41,586 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 17:56:41,649 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8df7075e-ac1d-4ae0-acd8-dff18ea22ac0/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-12-02 17:56:41,653 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 17:56:41,653 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 17:56:41,677 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 17:56:41,677 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 17:56:41,678 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 17:56:41,679 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 17:56:41,680 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 17:56:41,680 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 17:56:41,681 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 17:56:41,681 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 17:56:41,682 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 17:56:41,682 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 17:56:41,683 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 17:56:41,683 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 17:56:41,684 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 17:56:41,684 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 17:56:41,685 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 17:56:41,685 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 17:56:41,688 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 17:56:41,689 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 17:56:41,689 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 17:56:41,690 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 17:56:41,690 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 17:56:41,690 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 17:56:41,690 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 17:56:41,691 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 17:56:41,691 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 17:56:41,692 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 17:56:41,692 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 17:56:41,693 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 17:56:41,693 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 17:56:41,693 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 17:56:41,693 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 17:56:41,693 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 17:56:41,694 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 17:56:41,694 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 17:56:41,694 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 17:56:41,694 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 17:56:41,695 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 17:56:41,695 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 17:56:41,695 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 17:56:41,695 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_8df7075e-ac1d-4ae0-acd8-dff18ea22ac0/bin/utaipan-verify-nQ1chXbOIh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8df7075e-ac1d-4ae0-acd8-dff18ea22ac0/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5cca11703f101d148385abb3e7759c3ab61c77d034554827e4ca1c3d0123761f [2023-12-02 17:56:41,904 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 17:56:41,924 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 17:56:41,926 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 17:56:41,928 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 17:56:41,928 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 17:56:41,929 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8df7075e-ac1d-4ae0-acd8-dff18ea22ac0/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_BufAl.c [2023-12-02 17:56:44,720 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 17:56:45,050 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 17:56:45,051 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8df7075e-ac1d-4ae0-acd8-dff18ea22ac0/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_BufAl.c [2023-12-02 17:56:45,072 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8df7075e-ac1d-4ae0-acd8-dff18ea22ac0/bin/utaipan-verify-nQ1chXbOIh/data/8d932552a/f0023db5b0d34a2fae4d3d1b0f55c879/FLAG8774c98e0 [2023-12-02 17:56:45,087 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8df7075e-ac1d-4ae0-acd8-dff18ea22ac0/bin/utaipan-verify-nQ1chXbOIh/data/8d932552a/f0023db5b0d34a2fae4d3d1b0f55c879 [2023-12-02 17:56:45,089 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 17:56:45,090 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 17:56:45,091 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 17:56:45,091 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 17:56:45,097 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 17:56:45,097 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 05:56:45" (1/1) ... [2023-12-02 17:56:45,099 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2324cfe5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:56:45, skipping insertion in model container [2023-12-02 17:56:45,099 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 05:56:45" (1/1) ... [2023-12-02 17:56:45,159 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 17:56:45,330 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_8df7075e-ac1d-4ae0-acd8-dff18ea22ac0/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_BufAl.c[1247,1260] [2023-12-02 17:56:45,639 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 17:56:45,649 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 17:56:45,662 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_8df7075e-ac1d-4ae0-acd8-dff18ea22ac0/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_BufAl.c[1247,1260] [2023-12-02 17:56:45,875 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 17:56:45,891 INFO L206 MainTranslator]: Completed translation [2023-12-02 17:56:45,891 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:56:45 WrapperNode [2023-12-02 17:56:45,892 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 17:56:45,893 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 17:56:45,893 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 17:56:45,893 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 17:56:45,900 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:56:45" (1/1) ... [2023-12-02 17:56:45,961 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:56:45" (1/1) ... [2023-12-02 17:56:46,261 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 3704 [2023-12-02 17:56:46,262 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 17:56:46,263 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 17:56:46,263 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 17:56:46,263 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 17:56:46,274 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:56:45" (1/1) ... [2023-12-02 17:56:46,274 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:56:45" (1/1) ... [2023-12-02 17:56:46,322 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:56:45" (1/1) ... [2023-12-02 17:56:46,322 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:56:45" (1/1) ... [2023-12-02 17:56:46,429 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:56:45" (1/1) ... [2023-12-02 17:56:46,445 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:56:45" (1/1) ... [2023-12-02 17:56:46,494 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:56:45" (1/1) ... [2023-12-02 17:56:46,510 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:56:45" (1/1) ... [2023-12-02 17:56:46,601 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 17:56:46,602 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 17:56:46,602 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 17:56:46,603 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 17:56:46,604 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:56:45" (1/1) ... [2023-12-02 17:56:46,611 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 17:56:46,624 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8df7075e-ac1d-4ae0-acd8-dff18ea22ac0/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:56:46,638 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8df7075e-ac1d-4ae0-acd8-dff18ea22ac0/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 17:56:46,641 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8df7075e-ac1d-4ae0-acd8-dff18ea22ac0/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 17:56:46,677 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 17:56:46,677 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 17:56:46,677 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 17:56:46,678 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 17:56:47,068 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 17:56:47,070 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 17:56:49,649 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 17:56:54,300 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 17:56:54,300 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-02 17:56:54,301 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 05:56:54 BoogieIcfgContainer [2023-12-02 17:56:54,301 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 17:56:54,303 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 17:56:54,303 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 17:56:54,306 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 17:56:54,306 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 05:56:45" (1/3) ... [2023-12-02 17:56:54,306 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a3f80b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 05:56:54, skipping insertion in model container [2023-12-02 17:56:54,306 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:56:45" (2/3) ... [2023-12-02 17:56:54,307 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a3f80b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 05:56:54, skipping insertion in model container [2023-12-02 17:56:54,307 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 05:56:54" (3/3) ... [2023-12-02 17:56:54,308 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.h_BufAl.c [2023-12-02 17:56:54,327 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 17:56:54,327 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 17:56:54,363 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 17:56:54,371 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;@41271bd0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 17:56:54,371 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 17:56:54,375 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) [2023-12-02 17:56:54,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-12-02 17:56:54,382 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:56:54,382 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-12-02 17:56:54,383 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:56:54,388 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:56:54,389 INFO L85 PathProgramCache]: Analyzing trace with hash 93902024, now seen corresponding path program 1 times [2023-12-02 17:56:54,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:56:54,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556591616] [2023-12-02 17:56:54,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:56:54,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:56:54,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 17:56:54,839 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-02 17:56:55,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 17:56:55,068 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-12-02 17:56:55,070 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-12-02 17:56:55,071 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-02 17:56:55,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 17:56:55,078 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-12-02 17:56:55,082 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-12-02 17:56:55,107 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2023-12-02 17:56:55,119 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 05:56:55 BoogieIcfgContainer [2023-12-02 17:56:55,119 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-02 17:56:55,120 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-12-02 17:56:55,120 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-12-02 17:56:55,120 INFO L274 PluginConnector]: Witness Printer initialized [2023-12-02 17:56:55,121 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 05:56:54" (3/4) ... [2023-12-02 17:56:55,123 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-12-02 17:56:55,124 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-12-02 17:56:55,125 INFO L158 Benchmark]: Toolchain (without parser) took 10034.95ms. Allocated memory was 140.5MB in the beginning and 943.7MB in the end (delta: 803.2MB). Free memory was 104.3MB in the beginning and 629.3MB in the end (delta: -524.9MB). Peak memory consumption was 279.1MB. Max. memory is 16.1GB. [2023-12-02 17:56:55,126 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 104.9MB. Free memory is still 59.4MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 17:56:55,127 INFO L158 Benchmark]: CACSL2BoogieTranslator took 800.74ms. Allocated memory was 140.5MB in the beginning and 180.4MB in the end (delta: 39.8MB). Free memory was 104.1MB in the beginning and 124.1MB in the end (delta: -20.1MB). Peak memory consumption was 81.8MB. Max. memory is 16.1GB. [2023-12-02 17:56:55,127 INFO L158 Benchmark]: Boogie Procedure Inliner took 369.33ms. Allocated memory is still 180.4MB. Free memory was 124.1MB in the beginning and 96.4MB in the end (delta: 27.7MB). Peak memory consumption was 95.2MB. Max. memory is 16.1GB. [2023-12-02 17:56:55,128 INFO L158 Benchmark]: Boogie Preprocessor took 338.82ms. Allocated memory is still 180.4MB. Free memory was 96.4MB in the beginning and 70.7MB in the end (delta: 25.7MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2023-12-02 17:56:55,129 INFO L158 Benchmark]: RCFGBuilder took 7699.06ms. Allocated memory was 180.4MB in the beginning and 943.7MB in the end (delta: 763.4MB). Free memory was 70.7MB in the beginning and 710.0MB in the end (delta: -639.3MB). Peak memory consumption was 490.0MB. Max. memory is 16.1GB. [2023-12-02 17:56:55,129 INFO L158 Benchmark]: TraceAbstraction took 816.06ms. Allocated memory is still 943.7MB. Free memory was 709.0MB in the beginning and 629.3MB in the end (delta: 79.7MB). Peak memory consumption was 79.7MB. Max. memory is 16.1GB. [2023-12-02 17:56:55,130 INFO L158 Benchmark]: Witness Printer took 4.33ms. Allocated memory is still 943.7MB. Free memory was 629.3MB in the beginning and 629.3MB in the end (delta: 2.7kB). There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 17:56:55,134 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 104.9MB. Free memory is still 59.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 800.74ms. Allocated memory was 140.5MB in the beginning and 180.4MB in the end (delta: 39.8MB). Free memory was 104.1MB in the beginning and 124.1MB in the end (delta: -20.1MB). Peak memory consumption was 81.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 369.33ms. Allocated memory is still 180.4MB. Free memory was 124.1MB in the beginning and 96.4MB in the end (delta: 27.7MB). Peak memory consumption was 95.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 338.82ms. Allocated memory is still 180.4MB. Free memory was 96.4MB in the beginning and 70.7MB in the end (delta: 25.7MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * RCFGBuilder took 7699.06ms. Allocated memory was 180.4MB in the beginning and 943.7MB in the end (delta: 763.4MB). Free memory was 70.7MB in the beginning and 710.0MB in the end (delta: -639.3MB). Peak memory consumption was 490.0MB. Max. memory is 16.1GB. * TraceAbstraction took 816.06ms. Allocated memory is still 943.7MB. Free memory was 709.0MB in the beginning and 629.3MB in the end (delta: 79.7MB). Peak memory consumption was 79.7MB. Max. memory is 16.1GB. * Witness Printer took 4.33ms. Allocated memory is still 943.7MB. Free memory was 629.3MB in the beginning and 629.3MB in the end (delta: 2.7kB). 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 161, overapproximation of bitwiseAnd at line 136. 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 - 4); [L30] const SORT_4 msb_SORT_4 = (SORT_4)1 << (4 - 1); [L32] const SORT_7 mask_SORT_7 = (SORT_7)-1 >> (sizeof(SORT_7) * 8 - 5); [L33] const SORT_7 msb_SORT_7 = (SORT_7)1 << (5 - 1); [L35] const SORT_12 mask_SORT_12 = (SORT_12)-1 >> (sizeof(SORT_12) * 8 - 32); [L36] const SORT_12 msb_SORT_12 = (SORT_12)1 << (32 - 1); [L38] const SORT_7 var_8 = 0; [L39] const SORT_12 var_14 = 0; [L40] const SORT_1 var_22 = 1; [L41] const SORT_1 var_26 = 0; [L42] const SORT_12 var_29 = 15; [L43] const SORT_12 var_79 = 14; [L44] const SORT_12 var_97 = 13; [L45] const SORT_12 var_115 = 12; [L46] const SORT_12 var_133 = 11; [L47] const SORT_12 var_151 = 10; [L48] const SORT_12 var_169 = 9; [L49] const SORT_12 var_187 = 8; [L50] const SORT_12 var_205 = 7; [L51] const SORT_12 var_223 = 6; [L52] const SORT_12 var_241 = 5; [L53] const SORT_12 var_259 = 4; [L54] const SORT_12 var_277 = 3; [L55] const SORT_12 var_295 = 2; [L56] const SORT_12 var_313 = 1; [L57] const SORT_4 var_352 = 0; [L58] const SORT_12 var_356 = 16; [L60] SORT_1 input_2; [L61] SORT_1 input_3; [L62] SORT_4 input_5; [L63] SORT_1 input_6; [L64] SORT_1 input_391; [L65] SORT_4 input_393; [L66] SORT_1 input_409; [L67] SORT_4 input_413; [L69] EXPR __VERIFIER_nondet_uchar() & mask_SORT_7 [L69] SORT_7 state_9 = __VERIFIER_nondet_uchar() & mask_SORT_7; [L70] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L70] SORT_1 state_27 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L71] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L71] SORT_1 state_30 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L72] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L72] SORT_1 state_32 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L73] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L73] SORT_1 state_35 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L74] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L74] SORT_1 state_37 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L75] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L75] SORT_1 state_41 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L76] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L76] SORT_1 state_43 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L77] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L77] SORT_1 state_46 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L78] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L78] SORT_1 state_48 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L79] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L79] SORT_1 state_53 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L80] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L80] SORT_1 state_55 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L81] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L81] SORT_1 state_58 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L82] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L82] SORT_1 state_60 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L83] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L83] SORT_1 state_64 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L84] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L84] SORT_1 state_66 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L85] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L85] SORT_1 state_69 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L86] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L86] SORT_1 state_71 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L87] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L87] SORT_1 state_350 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L88] EXPR __VERIFIER_nondet_uchar() & mask_SORT_4 [L88] SORT_4 state_353 = __VERIFIER_nondet_uchar() & mask_SORT_4; [L90] SORT_7 init_10_arg_1 = var_8; [L91] state_9 = init_10_arg_1 [L92] SORT_1 init_28_arg_1 = var_26; [L93] state_27 = init_28_arg_1 [L94] SORT_1 init_31_arg_1 = var_26; [L95] state_30 = init_31_arg_1 [L96] SORT_1 init_33_arg_1 = var_26; [L97] state_32 = init_33_arg_1 [L98] SORT_1 init_36_arg_1 = var_26; [L99] state_35 = init_36_arg_1 [L100] SORT_1 init_38_arg_1 = var_26; [L101] state_37 = init_38_arg_1 [L102] SORT_1 init_42_arg_1 = var_26; [L103] state_41 = init_42_arg_1 [L104] SORT_1 init_44_arg_1 = var_26; [L105] state_43 = init_44_arg_1 [L106] SORT_1 init_47_arg_1 = var_26; [L107] state_46 = init_47_arg_1 [L108] SORT_1 init_49_arg_1 = var_26; [L109] state_48 = init_49_arg_1 [L110] SORT_1 init_54_arg_1 = var_26; [L111] state_53 = init_54_arg_1 [L112] SORT_1 init_56_arg_1 = var_26; [L113] state_55 = init_56_arg_1 [L114] SORT_1 init_59_arg_1 = var_26; [L115] state_58 = init_59_arg_1 [L116] SORT_1 init_61_arg_1 = var_26; [L117] state_60 = init_61_arg_1 [L118] SORT_1 init_65_arg_1 = var_26; [L119] state_64 = init_65_arg_1 [L120] SORT_1 init_67_arg_1 = var_26; [L121] state_66 = init_67_arg_1 [L122] SORT_1 init_70_arg_1 = var_26; [L123] state_69 = init_70_arg_1 [L124] SORT_1 init_72_arg_1 = var_26; [L125] state_71 = init_72_arg_1 [L126] SORT_1 init_351_arg_1 = var_26; [L127] state_350 = init_351_arg_1 [L128] SORT_4 init_354_arg_1 = var_352; [L129] state_353 = init_354_arg_1 VAL [init_10_arg_1=0, init_28_arg_1=0, init_31_arg_1=0, init_33_arg_1=0, init_351_arg_1=0, init_354_arg_1=0, init_36_arg_1=0, init_38_arg_1=0, init_42_arg_1=0, init_44_arg_1=0, init_47_arg_1=0, init_49_arg_1=0, init_54_arg_1=0, init_56_arg_1=0, init_59_arg_1=0, init_61_arg_1=0, init_65_arg_1=0, init_67_arg_1=0, init_70_arg_1=0, init_72_arg_1=0, mask_SORT_12=4294967295, mask_SORT_1=1, mask_SORT_4=15, mask_SORT_7=31, msb_SORT_12=2147483648, msb_SORT_1=1, msb_SORT_4=8, msb_SORT_7=16, state_27=0, state_30=0, state_32=0, state_350=0, state_353=0, state_35=0, state_37=0, state_41=0, state_43=0, state_46=0, state_48=0, state_53=0, state_55=0, state_58=0, state_60=0, state_64=0, state_66=0, state_69=0, state_71=0, state_9=0, var_115=12, var_133=11, var_14=0, var_151=10, var_169=9, var_187=8, var_205=7, var_223=6, var_22=1, var_241=5, var_259=4, var_26=0, var_277=3, var_295=2, var_29=15, var_313=1, var_352=0, var_356=16, var_79=14, var_8=0, var_97=13] [L132] input_2 = __VERIFIER_nondet_uchar() [L133] input_3 = __VERIFIER_nondet_uchar() [L134] input_5 = __VERIFIER_nondet_uchar() [L135] input_6 = __VERIFIER_nondet_uchar() [L136] EXPR input_6 & mask_SORT_1 [L136] input_6 = input_6 & mask_SORT_1 [L137] input_391 = __VERIFIER_nondet_uchar() [L138] input_393 = __VERIFIER_nondet_uchar() [L139] input_409 = __VERIFIER_nondet_uchar() [L140] input_413 = __VERIFIER_nondet_uchar() [L143] SORT_7 var_11_arg_0 = state_9; [L144] SORT_1 var_11 = var_11_arg_0 >> 4; [L145] SORT_1 var_13_arg_0 = var_11; [L146] EXPR var_13_arg_0 & mask_SORT_1 [L146] var_13_arg_0 = var_13_arg_0 & mask_SORT_1 [L147] SORT_12 var_13 = var_13_arg_0; [L148] SORT_12 var_15_arg_0 = var_13; [L149] SORT_12 var_15_arg_1 = var_14; [L150] SORT_1 var_15 = var_15_arg_0 == var_15_arg_1; [L151] SORT_7 var_16_arg_0 = state_9; [L152] SORT_4 var_16 = var_16_arg_0 >> 0; [L153] SORT_4 var_17_arg_0 = var_16; [L154] EXPR var_17_arg_0 & mask_SORT_4 [L154] var_17_arg_0 = var_17_arg_0 & mask_SORT_4 [L155] SORT_12 var_17 = var_17_arg_0; [L156] SORT_12 var_18_arg_0 = var_17; [L157] SORT_12 var_18_arg_1 = var_14; [L158] SORT_1 var_18 = var_18_arg_0 == var_18_arg_1; [L159] SORT_1 var_19_arg_0 = var_15; [L160] SORT_1 var_19_arg_1 = var_18; [L161] EXPR var_19_arg_0 | var_19_arg_1 [L161] SORT_1 var_19 = var_19_arg_0 | var_19_arg_1; [L162] SORT_1 var_23_arg_0 = var_19; [L163] SORT_1 var_23 = ~var_23_arg_0; [L164] SORT_1 var_24_arg_0 = var_22; [L165] SORT_1 var_24_arg_1 = var_23; [L166] EXPR var_24_arg_0 & var_24_arg_1 [L166] SORT_1 var_24 = var_24_arg_0 & var_24_arg_1; [L167] EXPR var_24 & mask_SORT_1 [L167] var_24 = var_24 & mask_SORT_1 [L168] SORT_1 bad_25_arg_0 = var_24; [L169] CALL __VERIFIER_assert(!(bad_25_arg_0)) [L21] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L21] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.7s, 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, 0.3s 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 [2023-12-02 17:56:55,159 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8df7075e-ac1d-4ae0-acd8-dff18ea22ac0/bin/utaipan-verify-nQ1chXbOIh/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-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8df7075e-ac1d-4ae0-acd8-dff18ea22ac0/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8df7075e-ac1d-4ae0-acd8-dff18ea22ac0/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8df7075e-ac1d-4ae0-acd8-dff18ea22ac0/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8df7075e-ac1d-4ae0-acd8-dff18ea22ac0/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_BufAl.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8df7075e-ac1d-4ae0-acd8-dff18ea22ac0/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8df7075e-ac1d-4ae0-acd8-dff18ea22ac0/bin/utaipan-verify-nQ1chXbOIh --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 5cca11703f101d148385abb3e7759c3ab61c77d034554827e4ca1c3d0123761f --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 17:56:57,148 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 17:56:57,223 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8df7075e-ac1d-4ae0-acd8-dff18ea22ac0/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2023-12-02 17:56:57,229 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 17:56:57,230 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 17:56:57,255 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 17:56:57,256 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 17:56:57,257 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 17:56:57,257 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 17:56:57,258 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 17:56:57,258 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 17:56:57,259 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 17:56:57,259 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 17:56:57,260 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 17:56:57,261 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 17:56:57,261 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 17:56:57,262 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 17:56:57,263 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 17:56:57,263 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 17:56:57,263 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 17:56:57,264 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 17:56:57,264 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 17:56:57,265 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-02 17:56:57,265 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-02 17:56:57,266 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-02 17:56:57,266 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 17:56:57,266 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 17:56:57,267 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 17:56:57,267 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-02 17:56:57,267 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 17:56:57,268 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 17:56:57,268 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 17:56:57,269 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 17:56:57,269 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 17:56:57,269 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 17:56:57,269 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-12-02 17:56:57,269 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-02 17:56:57,270 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 17:56:57,270 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 17:56:57,270 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 17:56:57,270 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 17:56:57,272 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_8df7075e-ac1d-4ae0-acd8-dff18ea22ac0/bin/utaipan-verify-nQ1chXbOIh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8df7075e-ac1d-4ae0-acd8-dff18ea22ac0/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5cca11703f101d148385abb3e7759c3ab61c77d034554827e4ca1c3d0123761f [2023-12-02 17:56:57,612 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 17:56:57,637 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 17:56:57,640 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 17:56:57,641 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 17:56:57,641 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 17:56:57,642 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8df7075e-ac1d-4ae0-acd8-dff18ea22ac0/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_BufAl.c [2023-12-02 17:57:00,595 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 17:57:00,898 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 17:57:00,898 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8df7075e-ac1d-4ae0-acd8-dff18ea22ac0/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_BufAl.c [2023-12-02 17:57:00,919 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8df7075e-ac1d-4ae0-acd8-dff18ea22ac0/bin/utaipan-verify-nQ1chXbOIh/data/9a19e4028/379e309d611e4519a207223a465f30de/FLAG704d7204f [2023-12-02 17:57:00,931 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8df7075e-ac1d-4ae0-acd8-dff18ea22ac0/bin/utaipan-verify-nQ1chXbOIh/data/9a19e4028/379e309d611e4519a207223a465f30de [2023-12-02 17:57:00,933 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 17:57:00,935 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 17:57:00,936 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 17:57:00,936 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 17:57:00,941 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 17:57:00,942 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 05:57:00" (1/1) ... [2023-12-02 17:57:00,943 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@691388fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:57:00, skipping insertion in model container [2023-12-02 17:57:00,943 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 05:57:00" (1/1) ... [2023-12-02 17:57:01,012 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 17:57:01,202 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_8df7075e-ac1d-4ae0-acd8-dff18ea22ac0/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_BufAl.c[1247,1260] [2023-12-02 17:57:01,477 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 17:57:01,491 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 17:57:01,503 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_8df7075e-ac1d-4ae0-acd8-dff18ea22ac0/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_BufAl.c[1247,1260] [2023-12-02 17:57:01,659 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 17:57:01,675 INFO L206 MainTranslator]: Completed translation [2023-12-02 17:57:01,675 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:57:01 WrapperNode [2023-12-02 17:57:01,675 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 17:57:01,676 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 17:57:01,677 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 17:57:01,677 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 17:57:01,684 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:57:01" (1/1) ... [2023-12-02 17:57:01,735 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:57:01" (1/1) ... [2023-12-02 17:57:01,827 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1934 [2023-12-02 17:57:01,828 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 17:57:01,829 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 17:57:01,829 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 17:57:01,829 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 17:57:01,838 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:57:01" (1/1) ... [2023-12-02 17:57:01,838 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:57:01" (1/1) ... [2023-12-02 17:57:01,853 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:57:01" (1/1) ... [2023-12-02 17:57:01,853 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:57:01" (1/1) ... [2023-12-02 17:57:01,901 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:57:01" (1/1) ... [2023-12-02 17:57:01,909 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:57:01" (1/1) ... [2023-12-02 17:57:01,922 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:57:01" (1/1) ... [2023-12-02 17:57:01,960 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:57:01" (1/1) ... [2023-12-02 17:57:01,977 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 17:57:01,978 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 17:57:01,978 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 17:57:01,978 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 17:57:01,979 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:57:01" (1/1) ... [2023-12-02 17:57:01,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 17:57:01,993 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8df7075e-ac1d-4ae0-acd8-dff18ea22ac0/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:57:02,004 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8df7075e-ac1d-4ae0-acd8-dff18ea22ac0/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 17:57:02,021 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8df7075e-ac1d-4ae0-acd8-dff18ea22ac0/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 17:57:02,048 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 17:57:02,048 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-12-02 17:57:02,048 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 17:57:02,048 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 17:57:02,401 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 17:57:02,404 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 17:57:05,257 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 17:57:05,363 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 17:57:05,363 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-02 17:57:05,363 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 05:57:05 BoogieIcfgContainer [2023-12-02 17:57:05,363 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 17:57:05,366 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 17:57:05,366 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 17:57:05,369 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 17:57:05,370 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 05:57:00" (1/3) ... [2023-12-02 17:57:05,370 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f0a212d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 05:57:05, skipping insertion in model container [2023-12-02 17:57:05,370 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:57:01" (2/3) ... [2023-12-02 17:57:05,371 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f0a212d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 05:57:05, skipping insertion in model container [2023-12-02 17:57:05,371 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 05:57:05" (3/3) ... [2023-12-02 17:57:05,372 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.h_BufAl.c [2023-12-02 17:57:05,387 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 17:57:05,387 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 17:57:05,424 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 17:57:05,430 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;@32f4ce94, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 17:57:05,430 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 17:57:05,434 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) [2023-12-02 17:57:05,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-12-02 17:57:05,438 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:57:05,439 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-12-02 17:57:05,439 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:57:05,444 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:57:05,444 INFO L85 PathProgramCache]: Analyzing trace with hash 1827279, now seen corresponding path program 1 times [2023-12-02 17:57:05,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 17:57:05,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [495404716] [2023-12-02 17:57:05,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:57:05,456 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 [2023-12-02 17:57:05,456 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8df7075e-ac1d-4ae0-acd8-dff18ea22ac0/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 17:57:05,457 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8df7075e-ac1d-4ae0-acd8-dff18ea22ac0/bin/utaipan-verify-nQ1chXbOIh/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) [2023-12-02 17:57:05,497 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8df7075e-ac1d-4ae0-acd8-dff18ea22ac0/bin/utaipan-verify-nQ1chXbOIh/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 [2023-12-02 17:57:05,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:57:05,916 INFO L262 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-02 17:57:05,929 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:57:06,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:57:06,150 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:57:06,151 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 17:57:06,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [495404716] [2023-12-02 17:57:06,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [495404716] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:57:06,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:57:06,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 17:57:06,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297954701] [2023-12-02 17:57:06,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:57:06,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 17:57:06,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 17:57:06,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 17:57:06,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 17:57:06,181 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) [2023-12-02 17:57:06,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:57:06,420 INFO L93 Difference]: Finished difference Result 16 states and 24 transitions. [2023-12-02 17:57:06,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 17:57:06,422 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 [2023-12-02 17:57:06,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:57:06,427 INFO L225 Difference]: With dead ends: 16 [2023-12-02 17:57:06,427 INFO L226 Difference]: Without dead ends: 9 [2023-12-02 17:57:06,432 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 [2023-12-02 17:57:06,436 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 [2023-12-02 17:57:06,437 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] [2023-12-02 17:57:06,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2023-12-02 17:57:06,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 8. [2023-12-02 17:57:06,464 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) [2023-12-02 17:57:06,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2023-12-02 17:57:06,466 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 4 [2023-12-02 17:57:06,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:57:06,466 INFO L495 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2023-12-02 17:57:06,466 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) [2023-12-02 17:57:06,467 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2023-12-02 17:57:06,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-12-02 17:57:06,467 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:57:06,467 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2023-12-02 17:57:06,478 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8df7075e-ac1d-4ae0-acd8-dff18ea22ac0/bin/utaipan-verify-nQ1chXbOIh/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 [2023-12-02 17:57:06,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8df7075e-ac1d-4ae0-acd8-dff18ea22ac0/bin/utaipan-verify-nQ1chXbOIh/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 [2023-12-02 17:57:06,670 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:57:06,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:57:06,671 INFO L85 PathProgramCache]: Analyzing trace with hash -1393329571, now seen corresponding path program 1 times [2023-12-02 17:57:06,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 17:57:06,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [87465782] [2023-12-02 17:57:06,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:57:06,675 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 [2023-12-02 17:57:06,675 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8df7075e-ac1d-4ae0-acd8-dff18ea22ac0/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 17:57:06,676 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8df7075e-ac1d-4ae0-acd8-dff18ea22ac0/bin/utaipan-verify-nQ1chXbOIh/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) [2023-12-02 17:57:06,678 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8df7075e-ac1d-4ae0-acd8-dff18ea22ac0/bin/utaipan-verify-nQ1chXbOIh/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 [2023-12-02 17:57:08,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:57:08,240 INFO L262 TraceCheckSpWp]: Trace formula consists of 1794 conjuncts, 44 conjunts are in the unsatisfiable core [2023-12-02 17:57:08,256 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:57:08,594 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:57:08,594 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 17:57:08,955 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:57:08,956 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 17:57:08,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [87465782] [2023-12-02 17:57:08,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [87465782] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 17:57:08,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1615613606] [2023-12-02 17:57:08,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:57:08,957 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 17:57:08,957 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8df7075e-ac1d-4ae0-acd8-dff18ea22ac0/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 17:57:08,960 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8df7075e-ac1d-4ae0-acd8-dff18ea22ac0/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 17:57:08,969 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8df7075e-ac1d-4ae0-acd8-dff18ea22ac0/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2023-12-02 17:57:10,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:57:10,583 INFO L262 TraceCheckSpWp]: Trace formula consists of 1794 conjuncts, 44 conjunts are in the unsatisfiable core [2023-12-02 17:57:10,600 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:57:10,772 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:57:10,772 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 17:57:10,983 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:57:10,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1615613606] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 17:57:10,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [875970099] [2023-12-02 17:57:10,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:57:10,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:57:10,984 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8df7075e-ac1d-4ae0-acd8-dff18ea22ac0/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:57:10,985 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8df7075e-ac1d-4ae0-acd8-dff18ea22ac0/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:57:10,988 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8df7075e-ac1d-4ae0-acd8-dff18ea22ac0/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-02 17:57:11,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:57:11,627 INFO L262 TraceCheckSpWp]: Trace formula consists of 1794 conjuncts, 47 conjunts are in the unsatisfiable core [2023-12-02 17:57:11,640 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:57:11,877 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:57:11,877 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 17:57:12,301 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:57:12,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [875970099] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 17:57:12,302 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-12-02 17:57:12,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 4, 5, 5] total 9 [2023-12-02 17:57:12,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904291363] [2023-12-02 17:57:12,303 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-12-02 17:57:12,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-02 17:57:12,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 17:57:12,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-02 17:57:12,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-12-02 17:57:12,306 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand has 10 states, 10 states have (on average 1.7) internal successors, (17), 9 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:57:12,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:57:12,715 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2023-12-02 17:57:12,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 17:57:12,716 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.7) internal successors, (17), 9 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-12-02 17:57:12,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:57:12,716 INFO L225 Difference]: With dead ends: 14 [2023-12-02 17:57:12,717 INFO L226 Difference]: Without dead ends: 12 [2023-12-02 17:57:12,717 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 24 SyntacticMatches, 4 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2023-12-02 17:57:12,719 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 8 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 17:57:12,719 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 9 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 17:57:12,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2023-12-02 17:57:12,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 11. [2023-12-02 17:57:12,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:57:12,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2023-12-02 17:57:12,723 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 7 [2023-12-02 17:57:12,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:57:12,724 INFO L495 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2023-12-02 17:57:12,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.7) internal successors, (17), 9 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:57:12,724 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2023-12-02 17:57:12,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-12-02 17:57:12,725 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:57:12,725 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1] [2023-12-02 17:57:12,736 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8df7075e-ac1d-4ae0-acd8-dff18ea22ac0/bin/utaipan-verify-nQ1chXbOIh/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)] Ended with exit code 0 [2023-12-02 17:57:12,940 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8df7075e-ac1d-4ae0-acd8-dff18ea22ac0/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (4)] Ended with exit code 0 [2023-12-02 17:57:13,137 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8df7075e-ac1d-4ae0-acd8-dff18ea22ac0/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-02 17:57:13,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8df7075e-ac1d-4ae0-acd8-dff18ea22ac0/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8df7075e-ac1d-4ae0-acd8-dff18ea22ac0/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8df7075e-ac1d-4ae0-acd8-dff18ea22ac0/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:57:13,329 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:57:13,330 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:57:13,330 INFO L85 PathProgramCache]: Analyzing trace with hash -2112524529, now seen corresponding path program 2 times [2023-12-02 17:57:13,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 17:57:13,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [782159417] [2023-12-02 17:57:13,333 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 17:57:13,334 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 [2023-12-02 17:57:13,334 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8df7075e-ac1d-4ae0-acd8-dff18ea22ac0/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 17:57:13,335 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8df7075e-ac1d-4ae0-acd8-dff18ea22ac0/bin/utaipan-verify-nQ1chXbOIh/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) [2023-12-02 17:57:13,336 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8df7075e-ac1d-4ae0-acd8-dff18ea22ac0/bin/utaipan-verify-nQ1chXbOIh/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 [2023-12-02 17:57:17,186 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-02 17:57:17,186 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 17:57:17,260 INFO L262 TraceCheckSpWp]: Trace formula consists of 3479 conjuncts, 356 conjunts are in the unsatisfiable core [2023-12-02 17:57:17,296 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:57:22,701 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:57:22,701 INFO L327 TraceCheckSpWp]: Computing backward predicates...