./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test8-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cf1a7837 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_9b831f09-c5ff-4eb5-9f06-c697c03b2152/bin/utaipan-verify-NcY6lQBIFX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b831f09-c5ff-4eb5-9f06-c697c03b2152/bin/utaipan-verify-NcY6lQBIFX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b831f09-c5ff-4eb5-9f06-c697c03b2152/bin/utaipan-verify-NcY6lQBIFX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b831f09-c5ff-4eb5-9f06-c697c03b2152/bin/utaipan-verify-NcY6lQBIFX/config/TaipanReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test8-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b831f09-c5ff-4eb5-9f06-c697c03b2152/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b831f09-c5ff-4eb5-9f06-c697c03b2152/bin/utaipan-verify-NcY6lQBIFX --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 3011b5baaaedb6c621e2913d841379eae3b8a9da7212e43b784fc8c1004eda96 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 00:55:39,916 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 00:55:40,036 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b831f09-c5ff-4eb5-9f06-c697c03b2152/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-12 00:55:40,041 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 00:55:40,042 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 00:55:40,085 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 00:55:40,086 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 00:55:40,087 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 00:55:40,088 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 00:55:40,088 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 00:55:40,089 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-12 00:55:40,089 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-12 00:55:40,090 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-12 00:55:40,091 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-12 00:55:40,091 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-12 00:55:40,092 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-12 00:55:40,093 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-12 00:55:40,093 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-12 00:55:40,094 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-12 00:55:40,094 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-12 00:55:40,095 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-12 00:55:40,096 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-12 00:55:40,097 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 00:55:40,097 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 00:55:40,098 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 00:55:40,098 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 00:55:40,099 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 00:55:40,099 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 00:55:40,100 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 00:55:40,100 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 00:55:40,101 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 00:55:40,101 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 00:55:40,102 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 00:55:40,102 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 00:55:40,103 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 00:55:40,103 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 00:55:40,104 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:55:40,104 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 00:55:40,105 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 00:55:40,105 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 00:55:40,105 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-12 00:55:40,106 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 00:55:40,106 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 00:55:40,107 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-12 00:55:40,107 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 00:55:40,108 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_9b831f09-c5ff-4eb5-9f06-c697c03b2152/bin/utaipan-verify-NcY6lQBIFX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b831f09-c5ff-4eb5-9f06-c697c03b2152/bin/utaipan-verify-NcY6lQBIFX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3011b5baaaedb6c621e2913d841379eae3b8a9da7212e43b784fc8c1004eda96 [2023-11-12 00:55:40,353 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 00:55:40,382 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 00:55:40,384 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 00:55:40,386 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 00:55:40,386 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 00:55:40,388 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b831f09-c5ff-4eb5-9f06-c697c03b2152/bin/utaipan-verify-NcY6lQBIFX/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test8-2.i [2023-11-12 00:55:43,458 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 00:55:43,885 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 00:55:43,885 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b831f09-c5ff-4eb5-9f06-c697c03b2152/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test8-2.i [2023-11-12 00:55:43,907 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b831f09-c5ff-4eb5-9f06-c697c03b2152/bin/utaipan-verify-NcY6lQBIFX/data/3235c5fb2/1f3ef44c614c4132aed3b209d8c1d779/FLAG0ae9424bd [2023-11-12 00:55:43,921 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b831f09-c5ff-4eb5-9f06-c697c03b2152/bin/utaipan-verify-NcY6lQBIFX/data/3235c5fb2/1f3ef44c614c4132aed3b209d8c1d779 [2023-11-12 00:55:43,924 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 00:55:43,925 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 00:55:43,927 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 00:55:43,927 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 00:55:43,932 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 00:55:43,933 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:55:43" (1/1) ... [2023-11-12 00:55:43,934 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@211950a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:55:43, skipping insertion in model container [2023-11-12 00:55:43,934 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:55:43" (1/1) ... [2023-11-12 00:55:44,022 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 00:55:44,432 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_9b831f09-c5ff-4eb5-9f06-c697c03b2152/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test8-2.i[33021,33034] [2023-11-12 00:55:44,601 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_9b831f09-c5ff-4eb5-9f06-c697c03b2152/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test8-2.i[45234,45247] [2023-11-12 00:55:44,622 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:55:44,640 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 00:55:44,686 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_9b831f09-c5ff-4eb5-9f06-c697c03b2152/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test8-2.i[33021,33034] [2023-11-12 00:55:44,754 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_9b831f09-c5ff-4eb5-9f06-c697c03b2152/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test8-2.i[45234,45247] [2023-11-12 00:55:44,764 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:55:44,800 WARN L672 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:55:44,808 INFO L206 MainTranslator]: Completed translation [2023-11-12 00:55:44,808 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:55:44 WrapperNode [2023-11-12 00:55:44,809 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 00:55:44,810 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 00:55:44,810 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 00:55:44,810 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 00:55:44,818 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:55:44" (1/1) ... [2023-11-12 00:55:44,874 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:55:44" (1/1) ... [2023-11-12 00:55:44,970 INFO L138 Inliner]: procedures = 177, calls = 348, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1494 [2023-11-12 00:55:44,970 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 00:55:44,971 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 00:55:44,971 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 00:55:44,972 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 00:55:44,981 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:55:44" (1/1) ... [2023-11-12 00:55:44,982 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:55:44" (1/1) ... [2023-11-12 00:55:44,993 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:55:44" (1/1) ... [2023-11-12 00:55:44,994 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:55:44" (1/1) ... [2023-11-12 00:55:45,092 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:55:44" (1/1) ... [2023-11-12 00:55:45,110 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:55:44" (1/1) ... [2023-11-12 00:55:45,124 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:55:44" (1/1) ... [2023-11-12 00:55:45,162 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:55:44" (1/1) ... [2023-11-12 00:55:45,174 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 00:55:45,180 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 00:55:45,181 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 00:55:45,181 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 00:55:45,182 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:55:44" (1/1) ... [2023-11-12 00:55:45,188 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:55:45,199 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b831f09-c5ff-4eb5-9f06-c697c03b2152/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:55:45,214 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b831f09-c5ff-4eb5-9f06-c697c03b2152/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 00:55:45,243 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b831f09-c5ff-4eb5-9f06-c697c03b2152/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 00:55:45,257 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 00:55:45,257 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-12 00:55:45,259 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-12 00:55:45,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 00:55:45,264 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-12 00:55:45,264 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-12 00:55:45,264 INFO L130 BoogieDeclarations]: Found specification of procedure test_int [2023-11-12 00:55:45,264 INFO L138 BoogieDeclarations]: Found implementation of procedure test_int [2023-11-12 00:55:45,264 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-12 00:55:45,264 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 00:55:45,265 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-12 00:55:45,265 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 00:55:45,265 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2023-11-12 00:55:45,265 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-12 00:55:45,265 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 00:55:45,266 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 00:55:45,266 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 00:55:45,266 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 00:55:45,531 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 00:55:45,533 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 00:55:47,404 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 00:55:49,447 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 00:55:49,447 INFO L302 CfgBuilder]: Removed 71 assume(true) statements. [2023-11-12 00:55:49,452 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:55:49 BoogieIcfgContainer [2023-11-12 00:55:49,452 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 00:55:49,456 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 00:55:49,457 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 00:55:49,460 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 00:55:49,460 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 12:55:43" (1/3) ... [2023-11-12 00:55:49,461 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2238ca19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:55:49, skipping insertion in model container [2023-11-12 00:55:49,461 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:55:44" (2/3) ... [2023-11-12 00:55:49,463 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2238ca19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:55:49, skipping insertion in model container [2023-11-12 00:55:49,463 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:55:49" (3/3) ... [2023-11-12 00:55:49,465 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_OAT_test8-2.i [2023-11-12 00:55:49,486 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 00:55:49,487 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-12 00:55:49,560 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 00:55:49,569 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;@296bbbd1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-12 00:55:49,569 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-12 00:55:49,576 INFO L276 IsEmpty]: Start isEmpty. Operand has 171 states, 145 states have (on average 1.7448275862068965) internal successors, (253), 162 states have internal predecessors, (253), 20 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 6 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-12 00:55:49,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-12 00:55:49,589 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:55:49,590 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:55:49,590 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:55:49,598 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:55:49,598 INFO L85 PathProgramCache]: Analyzing trace with hash 2057355763, now seen corresponding path program 1 times [2023-11-12 00:55:49,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:55:49,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427520698] [2023-11-12 00:55:49,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:55:49,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:55:49,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:55:49,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:55:49,848 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:55:49,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427520698] [2023-11-12 00:55:49,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427520698] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:55:49,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:55:49,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 00:55:49,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673168886] [2023-11-12 00:55:49,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:55:49,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-12 00:55:49,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:55:49,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-12 00:55:49,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 00:55:49,921 INFO L87 Difference]: Start difference. First operand has 171 states, 145 states have (on average 1.7448275862068965) internal successors, (253), 162 states have internal predecessors, (253), 20 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 6 states have call predecessors, (20), 20 states have call successors, (20) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:55:51,985 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-12 00:55:54,000 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-12 00:55:56,047 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-12 00:55:58,069 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-12 00:56:00,014 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-11-12 00:56:00,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:56:00,030 INFO L93 Difference]: Finished difference Result 341 states and 602 transitions. [2023-11-12 00:56:00,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-12 00:56:00,032 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 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) Word has length 8 [2023-11-12 00:56:00,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:56:00,050 INFO L225 Difference]: With dead ends: 341 [2023-11-12 00:56:00,050 INFO L226 Difference]: Without dead ends: 154 [2023-11-12 00:56:00,055 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 [2023-11-12 00:56:00,059 INFO L413 NwaCegarLoop]: 188 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.0s IncrementalHoareTripleChecker+Time [2023-11-12 00:56:00,060 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 188 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 4 Unknown, 0 Unchecked, 10.0s Time] [2023-11-12 00:56:00,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2023-11-12 00:56:00,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2023-11-12 00:56:00,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 129 states have (on average 1.255813953488372) internal successors, (162), 145 states have internal predecessors, (162), 20 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 6 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-12 00:56:00,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 202 transitions. [2023-11-12 00:56:00,126 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 202 transitions. Word has length 8 [2023-11-12 00:56:00,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:56:00,127 INFO L495 AbstractCegarLoop]: Abstraction has 154 states and 202 transitions. [2023-11-12 00:56:00,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:56:00,127 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 202 transitions. [2023-11-12 00:56:00,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-11-12 00:56:00,130 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:56:00,130 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] [2023-11-12 00:56:00,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 00:56:00,131 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:56:00,131 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:56:00,132 INFO L85 PathProgramCache]: Analyzing trace with hash 686629252, now seen corresponding path program 1 times [2023-11-12 00:56:00,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:56:00,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820069151] [2023-11-12 00:56:00,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:56:00,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:56:00,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:56:00,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:56:00,764 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:56:00,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820069151] [2023-11-12 00:56:00,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820069151] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:56:00,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:56:00,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 00:56:00,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3110809] [2023-11-12 00:56:00,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:56:00,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 00:56:00,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:56:00,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 00:56:00,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 00:56:00,769 INFO L87 Difference]: Start difference. First operand 154 states and 202 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:56:02,829 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 [] [2023-11-12 00:56:04,838 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-12 00:56:06,860 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-12 00:56:08,868 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-12 00:56:11,225 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-12 00:56:13,230 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-12 00:56:15,241 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-12 00:56:17,268 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-12 00:56:19,275 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-12 00:56:21,284 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-12 00:56:23,329 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-12 00:56:25,337 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-12 00:56:27,355 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-12 00:56:29,363 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-12 00:56:32,305 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-12 00:56:34,361 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-12 00:56:36,367 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-12 00:56:38,384 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-12 00:56:40,389 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-12 00:56:42,399 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 [] [2023-11-12 00:56:42,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:56:42,422 INFO L93 Difference]: Finished difference Result 310 states and 407 transitions. [2023-11-12 00:56:42,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 00:56:42,422 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 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 22 [2023-11-12 00:56:42,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:56:42,425 INFO L225 Difference]: With dead ends: 310 [2023-11-12 00:56:42,425 INFO L226 Difference]: Without dead ends: 215 [2023-11-12 00:56:42,427 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-12 00:56:42,428 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 65 mSDsluCounter, 316 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 2 mSolverCounterUnsat, 20 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 41.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 482 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 20 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 41.6s IncrementalHoareTripleChecker+Time [2023-11-12 00:56:42,429 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 482 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 110 Invalid, 20 Unknown, 0 Unchecked, 41.6s Time] [2023-11-12 00:56:42,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2023-11-12 00:56:42,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 156. [2023-11-12 00:56:42,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 131 states have (on average 1.251908396946565) internal successors, (164), 147 states have internal predecessors, (164), 20 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 6 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-12 00:56:42,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 204 transitions. [2023-11-12 00:56:42,504 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 204 transitions. Word has length 22 [2023-11-12 00:56:42,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:56:42,505 INFO L495 AbstractCegarLoop]: Abstraction has 156 states and 204 transitions. [2023-11-12 00:56:42,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:56:42,505 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 204 transitions. [2023-11-12 00:56:42,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-11-12 00:56:42,507 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:56:42,507 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:56:42,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 00:56:42,507 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:56:42,508 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:56:42,508 INFO L85 PathProgramCache]: Analyzing trace with hash 1627486107, now seen corresponding path program 1 times [2023-11-12 00:56:42,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:56:42,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65764514] [2023-11-12 00:56:42,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:56:42,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:56:42,583 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 00:56:42,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1956754164] [2023-11-12 00:56:42,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:56:42,585 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:56:42,585 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b831f09-c5ff-4eb5-9f06-c697c03b2152/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:56:42,588 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b831f09-c5ff-4eb5-9f06-c697c03b2152/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:56:42,616 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b831f09-c5ff-4eb5-9f06-c697c03b2152/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-12 00:56:43,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:56:43,020 INFO L262 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-12 00:56:43,029 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:56:43,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:56:43,141 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:56:43,141 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:56:43,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65764514] [2023-11-12 00:56:43,142 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 00:56:43,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1956754164] [2023-11-12 00:56:43,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1956754164] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:56:43,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:56:43,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 00:56:43,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314079005] [2023-11-12 00:56:43,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:56:43,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:56:43,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:56:43,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:56:43,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:56:43,148 INFO L87 Difference]: Start difference. First operand 156 states and 204 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 2 states have internal predecessors, (34), 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) [2023-11-12 00:56:45,173 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 [] [2023-11-12 00:56:47,187 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 []