./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test10-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 30e01a73 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_ad4fcc12-2c4b-41cb-abf1-3b82bc5cf3f0/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4fcc12-2c4b-41cb-abf1-3b82bc5cf3f0/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4fcc12-2c4b-41cb-abf1-3b82bc5cf3f0/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4fcc12-2c4b-41cb-abf1-3b82bc5cf3f0/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test10-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4fcc12-2c4b-41cb-abf1-3b82bc5cf3f0/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4fcc12-2c4b-41cb-abf1-3b82bc5cf3f0/bin/utaipan-verify-mE87zJ7Ire --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3f1ddce0da39afb2e81d3f6974a6168ade2d49435b1ce063903c0017c6d40b05 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:27:21,984 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:27:22,099 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4fcc12-2c4b-41cb-abf1-3b82bc5cf3f0/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-23 21:27:22,106 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:27:22,107 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:27:22,151 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:27:22,151 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:27:22,154 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:27:22,157 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:27:22,162 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:27:22,163 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:27:22,163 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:27:22,164 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:27:22,165 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 21:27:22,166 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:27:22,166 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:27:22,167 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 21:27:22,167 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 21:27:22,168 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:27:22,168 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 21:27:22,170 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 21:27:22,171 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 21:27:22,172 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:27:22,172 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:27:22,173 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 21:27:22,173 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:27:22,174 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 21:27:22,174 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:27:22,174 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:27:22,175 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:27:22,176 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:27:22,176 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 21:27:22,196 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:27:22,196 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:27:22,197 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:27:22,197 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:27:22,197 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:27:22,198 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:27:22,198 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:27:22,198 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:27:22,199 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:27:22,199 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 21:27:22,200 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:27:22,200 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:27:22,200 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:27:22,201 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:27:22,201 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:27:22,201 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_ad4fcc12-2c4b-41cb-abf1-3b82bc5cf3f0/bin/utaipan-verify-mE87zJ7Ire/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4fcc12-2c4b-41cb-abf1-3b82bc5cf3f0/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3f1ddce0da39afb2e81d3f6974a6168ade2d49435b1ce063903c0017c6d40b05 [2023-11-23 21:27:22,562 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:27:22,595 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:27:22,598 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:27:22,601 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:27:22,601 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:27:22,602 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4fcc12-2c4b-41cb-abf1-3b82bc5cf3f0/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test10-2.i [2023-11-23 21:27:25,885 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:27:26,303 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:27:26,304 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4fcc12-2c4b-41cb-abf1-3b82bc5cf3f0/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test10-2.i [2023-11-23 21:27:26,325 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4fcc12-2c4b-41cb-abf1-3b82bc5cf3f0/bin/utaipan-verify-mE87zJ7Ire/data/727d724f6/73fccd1959ff4e9f8a67f6dc1055f3bb/FLAG1c0d74891 [2023-11-23 21:27:26,339 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4fcc12-2c4b-41cb-abf1-3b82bc5cf3f0/bin/utaipan-verify-mE87zJ7Ire/data/727d724f6/73fccd1959ff4e9f8a67f6dc1055f3bb [2023-11-23 21:27:26,342 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:27:26,343 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:27:26,345 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:27:26,345 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:27:26,356 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:27:26,357 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:27:26" (1/1) ... [2023-11-23 21:27:26,358 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ec37eba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:27:26, skipping insertion in model container [2023-11-23 21:27:26,358 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:27:26" (1/1) ... [2023-11-23 21:27:26,449 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:27:26,988 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_ad4fcc12-2c4b-41cb-abf1-3b82bc5cf3f0/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test10-2.i[33022,33035] [2023-11-23 21:27:27,232 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:27:27,242 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:27:27,273 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_ad4fcc12-2c4b-41cb-abf1-3b82bc5cf3f0/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test10-2.i[33022,33035] [2023-11-23 21:27:27,453 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:27:27,578 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:27:27,589 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:27:27,591 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:27:27 WrapperNode [2023-11-23 21:27:27,591 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:27:27,593 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:27:27,593 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:27:27,593 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:27:27,601 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:27:27" (1/1) ... [2023-11-23 21:27:27,699 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:27:27" (1/1) ... [2023-11-23 21:27:27,853 INFO L138 Inliner]: procedures = 177, calls = 575, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 3295 [2023-11-23 21:27:27,854 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:27:27,855 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:27:27,855 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:27:27,856 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:27:27,865 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:27:27" (1/1) ... [2023-11-23 21:27:27,866 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:27:27" (1/1) ... [2023-11-23 21:27:27,888 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:27:27" (1/1) ... [2023-11-23 21:27:27,888 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:27:27" (1/1) ... [2023-11-23 21:27:27,998 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:27:27" (1/1) ... [2023-11-23 21:27:28,043 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:27:27" (1/1) ... [2023-11-23 21:27:28,057 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:27:27" (1/1) ... [2023-11-23 21:27:28,076 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:27:27" (1/1) ... [2023-11-23 21:27:28,103 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:27:28,104 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:27:28,105 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:27:28,105 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:27:28,106 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:27:27" (1/1) ... [2023-11-23 21:27:28,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:27:28,124 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4fcc12-2c4b-41cb-abf1-3b82bc5cf3f0/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:27:28,137 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4fcc12-2c4b-41cb-abf1-3b82bc5cf3f0/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:27:28,163 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4fcc12-2c4b-41cb-abf1-3b82bc5cf3f0/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:27:28,181 INFO L130 BoogieDeclarations]: Found specification of procedure test_int_int [2023-11-23 21:27:28,181 INFO L138 BoogieDeclarations]: Found implementation of procedure test_int_int [2023-11-23 21:27:28,181 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 21:27:28,183 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-23 21:27:28,184 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-23 21:27:28,184 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 21:27:28,184 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-23 21:27:28,185 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-23 21:27:28,185 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 21:27:28,185 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:27:28,185 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-23 21:27:28,185 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 21:27:28,185 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2023-11-23 21:27:28,186 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-23 21:27:28,186 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 21:27:28,186 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 21:27:28,187 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:27:28,187 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:27:28,520 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:27:28,526 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:27:31,843 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:27:37,049 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:27:37,050 INFO L309 CfgBuilder]: Removed 160 assume(true) statements. [2023-11-23 21:27:37,052 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:27:37 BoogieIcfgContainer [2023-11-23 21:27:37,052 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:27:37,058 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:27:37,058 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:27:37,062 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:27:37,062 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:27:26" (1/3) ... [2023-11-23 21:27:37,065 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41639703 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:27:37, skipping insertion in model container [2023-11-23 21:27:37,065 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:27:27" (2/3) ... [2023-11-23 21:27:37,066 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41639703 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:27:37, skipping insertion in model container [2023-11-23 21:27:37,067 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:27:37" (3/3) ... [2023-11-23 21:27:37,068 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_FNV_test10-2.i [2023-11-23 21:27:37,094 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:27:37,095 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 21:27:37,181 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:27:37,189 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;@796eb4b7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:27:37,190 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 21:27:37,198 INFO L276 IsEmpty]: Start isEmpty. Operand has 286 states, 267 states have (on average 1.7602996254681649) internal successors, (470), 272 states have internal predecessors, (470), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 11 states have call predecessors, (14), 14 states have call successors, (14) [2023-11-23 21:27:37,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-23 21:27:37,211 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:27:37,212 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:27:37,212 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:27:37,221 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:27:37,221 INFO L85 PathProgramCache]: Analyzing trace with hash 1003633676, now seen corresponding path program 1 times [2023-11-23 21:27:37,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:27:37,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183414042] [2023-11-23 21:27:37,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:27:37,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:27:37,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:27:37,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:27:37,480 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:27:37,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183414042] [2023-11-23 21:27:37,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183414042] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:27:37,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:27:37,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:27:37,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649283125] [2023-11-23 21:27:37,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:27:37,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-23 21:27:37,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:27:37,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-23 21:27:37,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-23 21:27:37,541 INFO L87 Difference]: Start difference. First operand has 286 states, 267 states have (on average 1.7602996254681649) internal successors, (470), 272 states have internal predecessors, (470), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 11 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:27:39,618 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-23 21:27:41,634 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-23 21:27:43,665 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-23 21:27:46,587 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-23 21:27:48,618 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-23 21:27:50,730 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-23 21:27:53,065 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.65s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-11-23 21:27:55,241 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-23 21:27:57,254 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-23 21:27:59,290 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-23 21:28:01,309 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-23 21:28:01,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:28:01,311 INFO L93 Difference]: Finished difference Result 525 states and 923 transitions. [2023-11-23 21:28:01,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-23 21:28:01,321 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-11-23 21:28:01,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:28:01,333 INFO L225 Difference]: With dead ends: 525 [2023-11-23 21:28:01,333 INFO L226 Difference]: Without dead ends: 233 [2023-11-23 21:28:01,338 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-23 21:28:01,342 INFO L413 NwaCegarLoop]: 244 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 2 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 244 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.7s IncrementalHoareTripleChecker+Time [2023-11-23 21:28:01,343 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 244 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 35 Invalid, 8 Unknown, 0 Unchecked, 23.7s Time] [2023-11-23 21:28:01,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2023-11-23 21:28:01,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 233. [2023-11-23 21:28:01,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 216 states have (on average 1.1805555555555556) internal successors, (255), 221 states have internal predecessors, (255), 13 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (12), 9 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-23 21:28:01,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 280 transitions. [2023-11-23 21:28:01,458 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 280 transitions. Word has length 12 [2023-11-23 21:28:01,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:28:01,459 INFO L495 AbstractCegarLoop]: Abstraction has 233 states and 280 transitions. [2023-11-23 21:28:01,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:28:01,460 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 280 transitions. [2023-11-23 21:28:01,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-11-23 21:28:01,465 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:28:01,465 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:28:01,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 21:28:01,466 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:28:01,466 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:28:01,467 INFO L85 PathProgramCache]: Analyzing trace with hash -861927365, now seen corresponding path program 1 times [2023-11-23 21:28:01,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:28:01,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776547392] [2023-11-23 21:28:01,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:28:01,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:28:01,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:28:02,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:28:02,007 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:28:02,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776547392] [2023-11-23 21:28:02,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776547392] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:28:02,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:28:02,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:28:02,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586634080] [2023-11-23 21:28:02,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:28:02,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:28:02,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:28:02,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:28:02,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:28:02,013 INFO L87 Difference]: Start difference. First operand 233 states and 280 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:28:04,089 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:28:06,096 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:28:08,114 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:28:10,119 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:28:12,134 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:28:14,142 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:28:16,158 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:28:18,163 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:28:20,665 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-23 21:28:22,673 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-23 21:28:24,680 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:28:26,696 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-23 21:28:28,700 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []