./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/neural-networks/softmax_4_safe.c-amalgamation.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 30e01a73 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_f38ee817-63fa-4b21-9a48-99c011680fcd/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38ee817-63fa-4b21-9a48-99c011680fcd/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_f38ee817-63fa-4b21-9a48-99c011680fcd/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38ee817-63fa-4b21-9a48-99c011680fcd/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/neural-networks/softmax_4_safe.c-amalgamation.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38ee817-63fa-4b21-9a48-99c011680fcd/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_f38ee817-63fa-4b21-9a48-99c011680fcd/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 40e574a11ca12b49ca5e943c34828a2bb84417bee7d51d8768967fd824c71eac --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 20:36:41,906 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 20:36:42,024 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38ee817-63fa-4b21-9a48-99c011680fcd/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-23 20:36:42,029 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 20:36:42,030 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 20:36:42,057 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 20:36:42,058 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 20:36:42,058 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 20:36:42,059 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 20:36:42,060 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 20:36:42,060 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 20:36:42,061 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 20:36:42,061 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 20:36:42,062 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 20:36:42,062 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 20:36:42,063 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 20:36:42,063 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 20:36:42,064 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 20:36:42,064 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 20:36:42,065 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 20:36:42,065 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 20:36:42,070 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 20:36:42,071 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 20:36:42,071 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 20:36:42,071 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 20:36:42,072 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 20:36:42,072 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 20:36:42,073 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 20:36:42,073 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 20:36:42,073 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 20:36:42,074 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 20:36:42,074 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 20:36:42,074 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 20:36:42,075 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 20:36:42,076 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 20:36:42,077 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 20:36:42,077 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 20:36:42,077 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 20:36:42,077 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 20:36:42,078 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 20:36:42,078 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 20:36:42,079 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 20:36:42,079 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 20:36:42,079 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 20:36:42,080 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 20:36:42,080 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 20:36:42,080 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 20:36:42,080 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_f38ee817-63fa-4b21-9a48-99c011680fcd/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38ee817-63fa-4b21-9a48-99c011680fcd/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 40e574a11ca12b49ca5e943c34828a2bb84417bee7d51d8768967fd824c71eac [2023-11-23 20:36:42,432 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 20:36:42,468 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 20:36:42,471 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 20:36:42,473 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 20:36:42,474 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 20:36:42,475 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38ee817-63fa-4b21-9a48-99c011680fcd/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/neural-networks/softmax_4_safe.c-amalgamation.i [2023-11-23 20:36:45,684 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 20:36:46,099 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 20:36:46,099 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38ee817-63fa-4b21-9a48-99c011680fcd/sv-benchmarks/c/neural-networks/softmax_4_safe.c-amalgamation.i [2023-11-23 20:36:46,121 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38ee817-63fa-4b21-9a48-99c011680fcd/bin/utaipan-verify-mE87zJ7Ire/data/04fe4b68a/5f0f3409a2a245f484d688797d71acd9/FLAG92f4e450c [2023-11-23 20:36:46,136 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38ee817-63fa-4b21-9a48-99c011680fcd/bin/utaipan-verify-mE87zJ7Ire/data/04fe4b68a/5f0f3409a2a245f484d688797d71acd9 [2023-11-23 20:36:46,139 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 20:36:46,140 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 20:36:46,142 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 20:36:46,142 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 20:36:46,148 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 20:36:46,148 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:36:46" (1/1) ... [2023-11-23 20:36:46,150 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67f0b537 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:36:46, skipping insertion in model container [2023-11-23 20:36:46,150 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:36:46" (1/1) ... [2023-11-23 20:36:46,206 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 20:36:46,474 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-23 20:36:46,921 WARN L635 FunctionHandler]: implicit declaration of function __builtin_isnan [2023-11-23 20:36:46,922 WARN L635 FunctionHandler]: implicit declaration of function __builtin_isinf_sign [2023-11-23 20:36:46,930 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_f38ee817-63fa-4b21-9a48-99c011680fcd/sv-benchmarks/c/neural-networks/softmax_4_safe.c-amalgamation.i[63646,63659] [2023-11-23 20:36:46,935 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:36:46,946 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 20:36:46,967 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-23 20:36:47,001 WARN L635 FunctionHandler]: implicit declaration of function __builtin_isnan [2023-11-23 20:36:47,002 WARN L635 FunctionHandler]: implicit declaration of function __builtin_isinf_sign [2023-11-23 20:36:47,006 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_f38ee817-63fa-4b21-9a48-99c011680fcd/sv-benchmarks/c/neural-networks/softmax_4_safe.c-amalgamation.i[63646,63659] [2023-11-23 20:36:47,007 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:36:47,166 WARN L675 CHandler]: The function __builtin_isnan is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:36:47,166 WARN L675 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:36:47,166 WARN L675 CHandler]: The function __builtin_isinf_sign is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:36:47,174 INFO L206 MainTranslator]: Completed translation [2023-11-23 20:36:47,175 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:36:47 WrapperNode [2023-11-23 20:36:47,175 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 20:36:47,176 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 20:36:47,176 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 20:36:47,176 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 20:36:47,184 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:36:47" (1/1) ... [2023-11-23 20:36:47,208 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:36:47" (1/1) ... [2023-11-23 20:36:47,240 INFO L138 Inliner]: procedures = 564, calls = 49, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 178 [2023-11-23 20:36:47,240 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 20:36:47,241 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 20:36:47,241 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 20:36:47,241 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 20:36:47,251 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:36:47" (1/1) ... [2023-11-23 20:36:47,251 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:36:47" (1/1) ... [2023-11-23 20:36:47,256 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:36:47" (1/1) ... [2023-11-23 20:36:47,256 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:36:47" (1/1) ... [2023-11-23 20:36:47,266 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:36:47" (1/1) ... [2023-11-23 20:36:47,270 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:36:47" (1/1) ... [2023-11-23 20:36:47,272 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:36:47" (1/1) ... [2023-11-23 20:36:47,274 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:36:47" (1/1) ... [2023-11-23 20:36:47,278 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 20:36:47,278 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 20:36:47,279 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 20:36:47,279 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 20:36:47,280 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:36:47" (1/1) ... [2023-11-23 20:36:47,286 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 20:36:47,301 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38ee817-63fa-4b21-9a48-99c011680fcd/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:36:47,317 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38ee817-63fa-4b21-9a48-99c011680fcd/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 20:36:47,355 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38ee817-63fa-4b21-9a48-99c011680fcd/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 20:36:47,369 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2023-11-23 20:36:47,369 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_isinf_sign [2023-11-23 20:36:47,369 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 20:36:47,369 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2023-11-23 20:36:47,370 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 20:36:47,370 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 20:36:47,371 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 20:36:47,371 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 20:36:47,372 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_isnan [2023-11-23 20:36:47,372 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 20:36:47,544 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 20:36:47,546 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 20:36:47,826 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 20:36:48,111 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 20:36:48,111 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-23 20:36:48,113 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:36:48 BoogieIcfgContainer [2023-11-23 20:36:48,113 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 20:36:48,118 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 20:36:48,119 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 20:36:48,122 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 20:36:48,122 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 08:36:46" (1/3) ... [2023-11-23 20:36:48,123 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d5d04e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:36:48, skipping insertion in model container [2023-11-23 20:36:48,123 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:36:47" (2/3) ... [2023-11-23 20:36:48,125 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d5d04e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:36:48, skipping insertion in model container [2023-11-23 20:36:48,125 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:36:48" (3/3) ... [2023-11-23 20:36:48,127 INFO L112 eAbstractionObserver]: Analyzing ICFG softmax_4_safe.c-amalgamation.i [2023-11-23 20:36:48,147 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 20:36:48,148 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 20:36:48,204 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 20:36:48,214 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;@c08d9eb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 20:36:48,214 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 20:36:48,219 INFO L276 IsEmpty]: Start isEmpty. Operand has 9 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 8 states have internal predecessors, (12), 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) [2023-11-23 20:36:48,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-23 20:36:48,226 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:36:48,227 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-23 20:36:48,228 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 20:36:48,236 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:36:48,236 INFO L85 PathProgramCache]: Analyzing trace with hash 935320817, now seen corresponding path program 1 times [2023-11-23 20:36:48,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:36:48,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748186114] [2023-11-23 20:36:48,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:36:48,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:36:48,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:36:48,714 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 20:36:48,715 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:36:48,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748186114] [2023-11-23 20:36:48,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748186114] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:36:48,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:36:48,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 20:36:48,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029026149] [2023-11-23 20:36:48,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:36:48,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 20:36:48,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:36:48,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 20:36:48,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:36:48,757 INFO L87 Difference]: Start difference. First operand has 9 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 8 states have internal predecessors, (12), 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 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2023-11-23 20:36:48,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:36:48,803 INFO L93 Difference]: Finished difference Result 17 states and 23 transitions. [2023-11-23 20:36:48,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 20:36:48,806 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 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 6 [2023-11-23 20:36:48,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:36:48,814 INFO L225 Difference]: With dead ends: 17 [2023-11-23 20:36:48,814 INFO L226 Difference]: Without dead ends: 8 [2023-11-23 20:36:48,817 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:36:48,821 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 0 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 20:36:48,822 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 20:36:48,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2023-11-23 20:36:48,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2023-11-23 20:36:48,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:36:48,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 10 transitions. [2023-11-23 20:36:48,865 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 10 transitions. Word has length 6 [2023-11-23 20:36:48,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:36:48,866 INFO L495 AbstractCegarLoop]: Abstraction has 8 states and 10 transitions. [2023-11-23 20:36:48,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2023-11-23 20:36:48,867 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 10 transitions. [2023-11-23 20:36:48,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-23 20:36:48,868 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:36:48,869 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:36:48,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 20:36:48,869 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 20:36:48,871 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:36:48,871 INFO L85 PathProgramCache]: Analyzing trace with hash -1520158920, now seen corresponding path program 1 times [2023-11-23 20:36:48,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:36:48,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633323735] [2023-11-23 20:36:48,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:36:48,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:36:48,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:36:49,179 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-23 20:36:49,180 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:36:49,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633323735] [2023-11-23 20:36:49,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633323735] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:36:49,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:36:49,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 20:36:49,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400185594] [2023-11-23 20:36:49,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:36:49,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 20:36:49,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:36:49,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 20:36:49,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-23 20:36:49,184 INFO L87 Difference]: Start difference. First operand 8 states and 10 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 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) [2023-11-23 20:36:49,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:36:49,245 INFO L93 Difference]: Finished difference Result 14 states and 18 transitions. [2023-11-23 20:36:49,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 20:36:49,250 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-11-23 20:36:49,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:36:49,251 INFO L225 Difference]: With dead ends: 14 [2023-11-23 20:36:49,251 INFO L226 Difference]: Without dead ends: 10 [2023-11-23 20:36:49,251 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-23 20:36:49,253 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 4 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 20:36:49,254 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 6 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 20:36:49,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2023-11-23 20:36:49,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2023-11-23 20:36:49,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 9 states have internal predecessors, (12), 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) [2023-11-23 20:36:49,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 12 transitions. [2023-11-23 20:36:49,276 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 12 transitions. Word has length 7 [2023-11-23 20:36:49,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:36:49,277 INFO L495 AbstractCegarLoop]: Abstraction has 10 states and 12 transitions. [2023-11-23 20:36:49,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 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) [2023-11-23 20:36:49,277 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 12 transitions. [2023-11-23 20:36:49,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-23 20:36:49,278 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:36:49,278 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:36:49,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-23 20:36:49,279 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 20:36:49,279 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:36:49,280 INFO L85 PathProgramCache]: Analyzing trace with hash -1117199878, now seen corresponding path program 1 times [2023-11-23 20:36:49,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:36:49,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805513624] [2023-11-23 20:36:49,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:36:49,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:36:49,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:36:49,517 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 20:36:49,517 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:36:49,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805513624] [2023-11-23 20:36:49,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805513624] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 20:36:49,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1380340994] [2023-11-23 20:36:49,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:36:49,522 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:36:49,523 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38ee817-63fa-4b21-9a48-99c011680fcd/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:36:49,527 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38ee817-63fa-4b21-9a48-99c011680fcd/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 20:36:49,547 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38ee817-63fa-4b21-9a48-99c011680fcd/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-23 20:36:49,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:36:49,715 INFO L262 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-23 20:36:49,721 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:36:49,805 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 20:36:49,806 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 20:36:49,839 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 20:36:49,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1380340994] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 20:36:49,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [405538670] [2023-11-23 20:36:49,868 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2023-11-23 20:36:49,868 INFO L166 IcfgInterpreter]: Building call graph [2023-11-23 20:36:49,873 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-23 20:36:49,880 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-23 20:36:49,880 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-23 20:36:50,951 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-23 20:36:51,486 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '147#(exists ((|v_ULTIMATE.start_softmax_~y#1.base_19| Int) (|v_ULTIMATE.start_softmax_~n#1_32| Int) (|v_ULTIMATE.start_softmax_#in~x#1.base_12| Int) (|v_ULTIMATE.start_softmax_#in~n#1_12| Int) (|v_ULTIMATE.start_softmax_#in~y#1.base_12| Int) (|v_ULTIMATE.start_softmax_~x#1.base_20| Int) (|v_ULTIMATE.start_softmax_#in~y#1.offset_12| Int) (|v_ULTIMATE.start_softmax_~x#1.offset_20| Int) (|v_ULTIMATE.start_softmax_~y#1.offset_19| Int) (|v_ULTIMATE.start_softmax_~i~0#1_68| Int) (|v_ULTIMATE.start_softmax_#in~x#1.offset_12| Int)) (and (<= 2 |v_ULTIMATE.start_softmax_#in~x#1.base_12|) (<= 1 |#StackHeapBarrier|) (= |v_ULTIMATE.start_softmax_#in~x#1.offset_12| 0) (= |v_ULTIMATE.start_softmax_#in~n#1_12| 4) (= |ULTIMATE.start_main_~#y~0#1.offset| 0) (= |v_ULTIMATE.start_softmax_~n#1_32| 4) (<= 2 |v_ULTIMATE.start_softmax_~y#1.base_19|) (= |v_ULTIMATE.start_softmax_#in~y#1.offset_12| 0) (<= 2 |ULTIMATE.start_main_~#x~0#1.base|) (= |ULTIMATE.start_main_~#x~0#1.offset| 0) (= |v_ULTIMATE.start_softmax_~x#1.offset_20| 0) (<= 2 |v_ULTIMATE.start_softmax_#in~y#1.base_12|) (<= 2 |v_ULTIMATE.start_softmax_~x#1.base_20|) (<= 4 |v_ULTIMATE.start_softmax_~i~0#1_68|) (<= 2 |ULTIMATE.start_main_~#y~0#1.base|) (= |v_ULTIMATE.start_softmax_~y#1.offset_19| 0)))' at error location [2023-11-23 20:36:51,487 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-23 20:36:51,487 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 20:36:51,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2023-11-23 20:36:51,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810314819] [2023-11-23 20:36:51,488 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 20:36:51,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-23 20:36:51,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:36:51,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-23 20:36:51,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2023-11-23 20:36:51,490 INFO L87 Difference]: Start difference. First operand 10 states and 12 transitions. Second operand has 8 states, 8 states have (on average 1.875) internal successors, (15), 7 states have internal predecessors, (15), 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) [2023-11-23 20:36:51,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:36:51,528 INFO L93 Difference]: Finished difference Result 19 states and 24 transitions. [2023-11-23 20:36:51,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 20:36:51,529 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 7 states have internal predecessors, (15), 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 9 [2023-11-23 20:36:51,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:36:51,529 INFO L225 Difference]: With dead ends: 19 [2023-11-23 20:36:51,530 INFO L226 Difference]: Without dead ends: 12 [2023-11-23 20:36:51,530 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2023-11-23 20:36:51,532 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 0 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 20:36:51,532 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 20:36:51,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2023-11-23 20:36:51,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2023-11-23 20:36:51,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:36:51,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2023-11-23 20:36:51,537 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 14 transitions. Word has length 9 [2023-11-23 20:36:51,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:36:51,538 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 14 transitions. [2023-11-23 20:36:51,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 7 states have internal predecessors, (15), 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) [2023-11-23 20:36:51,538 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 14 transitions. [2023-11-23 20:36:51,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-23 20:36:51,539 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:36:51,539 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:36:51,568 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38ee817-63fa-4b21-9a48-99c011680fcd/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-23 20:36:51,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38ee817-63fa-4b21-9a48-99c011680fcd/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:36:51,755 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 20:36:51,755 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:36:51,756 INFO L85 PathProgramCache]: Analyzing trace with hash -635540198, now seen corresponding path program 2 times [2023-11-23 20:36:51,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:36:51,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685360302] [2023-11-23 20:36:51,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:36:51,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:36:51,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:36:51,897 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-23 20:36:51,898 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:36:51,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685360302] [2023-11-23 20:36:51,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685360302] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 20:36:51,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [456228802] [2023-11-23 20:36:51,899 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-23 20:36:51,899 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:36:51,899 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38ee817-63fa-4b21-9a48-99c011680fcd/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:36:51,900 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38ee817-63fa-4b21-9a48-99c011680fcd/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 20:36:51,922 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38ee817-63fa-4b21-9a48-99c011680fcd/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-23 20:36:52,063 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-23 20:36:52,063 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 20:36:52,065 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-23 20:36:52,067 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:36:52,133 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-23 20:36:52,133 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 20:36:52,168 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-23 20:36:52,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [456228802] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 20:36:52,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [576983922] [2023-11-23 20:36:52,173 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2023-11-23 20:36:52,173 INFO L166 IcfgInterpreter]: Building call graph [2023-11-23 20:36:52,174 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-23 20:36:52,175 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-23 20:36:52,175 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-23 20:36:52,762 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-23 20:36:53,218 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '273#(exists ((|v_ULTIMATE.start_softmax_~i~0#1_87| Int) (|v_ULTIMATE.start_softmax_~n#1_33| Int) (|v_ULTIMATE.start_softmax_#in~x#1.base_14| Int) (|v_ULTIMATE.start_softmax_~y#1.offset_21| Int) (|v_ULTIMATE.start_softmax_~x#1.base_22| Int) (|v_ULTIMATE.start_softmax_#in~n#1_14| Int) (|v_ULTIMATE.start_softmax_#in~y#1.base_14| Int) (|v_ULTIMATE.start_softmax_~y#1.base_21| Int) (|v_ULTIMATE.start_softmax_~x#1.offset_22| Int) (|v_ULTIMATE.start_softmax_#in~x#1.offset_14| Int) (|v_ULTIMATE.start_softmax_#in~y#1.offset_14| Int)) (and (<= 1 |#StackHeapBarrier|) (= |v_ULTIMATE.start_softmax_~y#1.offset_21| 0) (<= 4 |v_ULTIMATE.start_softmax_~i~0#1_87|) (= |ULTIMATE.start_main_~#y~0#1.offset| 0) (= |v_ULTIMATE.start_softmax_#in~x#1.offset_14| 0) (= |v_ULTIMATE.start_softmax_#in~y#1.offset_14| 0) (<= 2 |v_ULTIMATE.start_softmax_~x#1.base_22|) (= |v_ULTIMATE.start_softmax_#in~n#1_14| 4) (<= 2 |v_ULTIMATE.start_softmax_#in~y#1.base_14|) (= |v_ULTIMATE.start_softmax_~n#1_33| 4) (<= 2 |ULTIMATE.start_main_~#x~0#1.base|) (= |ULTIMATE.start_main_~#x~0#1.offset| 0) (= |v_ULTIMATE.start_softmax_~x#1.offset_22| 0) (<= 2 |v_ULTIMATE.start_softmax_#in~x#1.base_14|) (<= 2 |v_ULTIMATE.start_softmax_~y#1.base_21|) (<= 2 |ULTIMATE.start_main_~#y~0#1.base|)))' at error location [2023-11-23 20:36:53,218 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-23 20:36:53,218 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 20:36:53,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2023-11-23 20:36:53,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834167874] [2023-11-23 20:36:53,218 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 20:36:53,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-23 20:36:53,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:36:53,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-23 20:36:53,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2023-11-23 20:36:53,220 INFO L87 Difference]: Start difference. First operand 12 states and 14 transitions. Second operand has 11 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 10 states have internal predecessors, (19), 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) [2023-11-23 20:36:53,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:36:53,299 INFO L93 Difference]: Finished difference Result 23 states and 31 transitions. [2023-11-23 20:36:53,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-23 20:36:53,300 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 10 states have internal predecessors, (19), 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 11 [2023-11-23 20:36:53,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:36:53,301 INFO L225 Difference]: With dead ends: 23 [2023-11-23 20:36:53,301 INFO L226 Difference]: Without dead ends: 18 [2023-11-23 20:36:53,301 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2023-11-23 20:36:53,302 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 16 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 20:36:53,303 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 12 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 20:36:53,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2023-11-23 20:36:53,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2023-11-23 20:36:53,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 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) [2023-11-23 20:36:53,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2023-11-23 20:36:53,308 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 11 [2023-11-23 20:36:53,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:36:53,308 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2023-11-23 20:36:53,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 10 states have internal predecessors, (19), 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) [2023-11-23 20:36:53,309 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2023-11-23 20:36:53,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-23 20:36:53,309 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:36:53,309 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1] [2023-11-23 20:36:53,337 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38ee817-63fa-4b21-9a48-99c011680fcd/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-23 20:36:53,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38ee817-63fa-4b21-9a48-99c011680fcd/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:36:53,524 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 20:36:53,524 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:36:53,524 INFO L85 PathProgramCache]: Analyzing trace with hash 1983738328, now seen corresponding path program 3 times [2023-11-23 20:36:53,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:36:53,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209182298] [2023-11-23 20:36:53,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:36:53,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:36:53,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 20:36:53,579 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 20:36:53,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 20:36:53,636 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-23 20:36:53,636 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-23 20:36:53,637 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-23 20:36:53,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-23 20:36:53,658 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1, 1] [2023-11-23 20:36:53,665 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-23 20:36:53,714 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem91 could not be translated [2023-11-23 20:36:53,715 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem91 could not be translated [2023-11-23 20:36:53,716 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem91 could not be translated [2023-11-23 20:36:53,717 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem91 could not be translated [2023-11-23 20:36:53,717 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem91 could not be translated [2023-11-23 20:36:53,718 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem91 could not be translated [2023-11-23 20:36:53,719 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem91 could not be translated [2023-11-23 20:36:53,720 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem91 could not be translated [2023-11-23 20:36:53,721 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: Expected StepInfo for loop construct to contain Condition, but it did not [2023-11-23 20:36:53,721 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem91 could not be translated [2023-11-23 20:36:53,728 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem91 could not be translated [2023-11-23 20:36:53,729 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem91 could not be translated [2023-11-23 20:36:53,730 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem91 could not be translated [2023-11-23 20:36:53,730 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem91 could not be translated [2023-11-23 20:36:53,731 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem121 could not be translated [2023-11-23 20:36:53,747 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 08:36:53 BoogieIcfgContainer [2023-11-23 20:36:53,748 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-23 20:36:53,748 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-23 20:36:53,749 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-23 20:36:53,749 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-23 20:36:53,749 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:36:48" (3/4) ... [2023-11-23 20:36:53,752 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-23 20:36:53,753 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-23 20:36:53,754 INFO L158 Benchmark]: Toolchain (without parser) took 7613.65ms. Allocated memory was 138.4MB in the beginning and 255.9MB in the end (delta: 117.4MB). Free memory was 91.5MB in the beginning and 216.6MB in the end (delta: -125.1MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 20:36:53,756 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 138.4MB. Free memory is still 110.7MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 20:36:53,757 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1033.57ms. Allocated memory is still 138.4MB. Free memory was 91.0MB in the beginning and 86.5MB in the end (delta: 4.5MB). Peak memory consumption was 48.1MB. Max. memory is 16.1GB. [2023-11-23 20:36:53,757 INFO L158 Benchmark]: Boogie Procedure Inliner took 64.09ms. Allocated memory is still 138.4MB. Free memory was 86.5MB in the beginning and 83.1MB in the end (delta: 3.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-23 20:36:53,757 INFO L158 Benchmark]: Boogie Preprocessor took 36.94ms. Allocated memory is still 138.4MB. Free memory was 83.1MB in the beginning and 81.6MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 20:36:53,758 INFO L158 Benchmark]: RCFGBuilder took 836.83ms. Allocated memory is still 138.4MB. Free memory was 81.6MB in the beginning and 104.9MB in the end (delta: -23.3MB). Peak memory consumption was 37.3MB. Max. memory is 16.1GB. [2023-11-23 20:36:53,758 INFO L158 Benchmark]: TraceAbstraction took 5629.63ms. Allocated memory was 138.4MB in the beginning and 255.9MB in the end (delta: 117.4MB). Free memory was 104.1MB in the beginning and 217.7MB in the end (delta: -113.6MB). Peak memory consumption was 121.9MB. Max. memory is 16.1GB. [2023-11-23 20:36:53,759 INFO L158 Benchmark]: Witness Printer took 5.07ms. Allocated memory is still 255.9MB. Free memory was 217.7MB in the beginning and 216.6MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 20:36:53,762 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 138.4MB. Free memory is still 110.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1033.57ms. Allocated memory is still 138.4MB. Free memory was 91.0MB in the beginning and 86.5MB in the end (delta: 4.5MB). Peak memory consumption was 48.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 64.09ms. Allocated memory is still 138.4MB. Free memory was 86.5MB in the beginning and 83.1MB in the end (delta: 3.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 36.94ms. Allocated memory is still 138.4MB. Free memory was 83.1MB in the beginning and 81.6MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 836.83ms. Allocated memory is still 138.4MB. Free memory was 81.6MB in the beginning and 104.9MB in the end (delta: -23.3MB). Peak memory consumption was 37.3MB. Max. memory is 16.1GB. * TraceAbstraction took 5629.63ms. Allocated memory was 138.4MB in the beginning and 255.9MB in the end (delta: 117.4MB). Free memory was 104.1MB in the beginning and 217.7MB in the end (delta: -113.6MB). Peak memory consumption was 121.9MB. Max. memory is 16.1GB. * Witness Printer took 5.07ms. Allocated memory is still 255.9MB. Free memory was 217.7MB in the beginning and 216.6MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem91 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem91 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem91 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem91 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem91 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem91 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem91 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem91 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expected StepInfo for loop construct to contain Condition, but it did not - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem91 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem91 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem91 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem91 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem91 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem121 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * 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: 873]: 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 someBinaryFLOATComparisonOperation at line 873, overapproximation of someBinaryArithmeticFLOAToperation at line 859. Possible FailurePath: [L863] float x[4], y[4]; [L864] x[0] = __VERIFIER_nondet_float() [L865] x[1] = __VERIFIER_nondet_float() [L866] x[2] = __VERIFIER_nondet_float() [L867] x[3] = __VERIFIER_nondet_float() [L868] EXPR x[0] [L868] EXPR !__builtin_isnan (x[0]) && !__builtin_isinf_sign (x[0]) [L868] EXPR x[0] [L868] EXPR !__builtin_isnan (x[0]) && !__builtin_isinf_sign (x[0]) [L868] COND FALSE !(!(!__builtin_isnan (x[0]) && !__builtin_isinf_sign (x[0]))) [L869] EXPR x[1] [L869] EXPR !__builtin_isnan (x[1]) && !__builtin_isinf_sign (x[1]) [L869] EXPR x[1] [L869] EXPR !__builtin_isnan (x[1]) && !__builtin_isinf_sign (x[1]) [L869] COND FALSE !(!(!__builtin_isnan (x[1]) && !__builtin_isinf_sign (x[1]))) [L870] EXPR x[2] [L870] EXPR !__builtin_isnan (x[2]) && !__builtin_isinf_sign (x[2]) [L870] EXPR x[2] [L870] EXPR !__builtin_isnan (x[2]) && !__builtin_isinf_sign (x[2]) [L870] COND FALSE !(!(!__builtin_isnan (x[2]) && !__builtin_isinf_sign (x[2]))) [L871] EXPR x[3] [L871] EXPR !__builtin_isnan (x[3]) && !__builtin_isinf_sign (x[3]) [L871] EXPR x[3] [L871] EXPR !__builtin_isnan (x[3]) && !__builtin_isinf_sign (x[3]) [L871] COND FALSE !(!(!__builtin_isnan (x[3]) && !__builtin_isinf_sign (x[3]))) [L872] CALL softmax(x, y, 4) [L847] int i; [L848] EXPR x[0] [L848] float max = x[0]; [L849] i = 1 VAL [\old(n)=4, i=1, max=140, n=4, x={10:0}, x={10:0}, y={9:0}, y={9:0}] [L849] COND TRUE i < n [L850] EXPR x[i] [L850] COND FALSE !(x[i] > max) [L849] ++i VAL [\old(n)=4, i=2, max=140, n=4, x={10:0}, x={10:0}, y={9:0}, y={9:0}] [L849] COND TRUE i < n [L850] EXPR x[i] [L850] COND FALSE !(x[i] > max) [L849] ++i VAL [\old(n)=4, i=3, max=140, n=4, x={10:0}, x={10:0}, y={9:0}, y={9:0}] [L849] COND TRUE i < n [L850] EXPR x[i] [L850] COND FALSE !(x[i] > max) [L849] ++i VAL [\old(n)=4, i=4, max=140, n=4, x={10:0}, x={10:0}, y={9:0}, y={9:0}] [L849] COND FALSE !(i < n) [L852] float sum = 0.0f; [L853] i = 0 VAL [\old(n)=4, i=0, max=140, n=4, sum=0, x={10:0}, x={10:0}, y={9:0}, y={9:0}] [L853] COND TRUE i < n [L854] EXPR x[i] [L854] float z = expf(x[i] - max); [L855] sum += z [L856] y[i] = z [L853] ++i VAL [\old(n)=4, i=1, max=140, n=4, x={10:0}, x={10:0}, y={9:0}, y={9:0}, z=144] [L853] COND TRUE i < n [L854] EXPR x[i] [L854] float z = expf(x[i] - max); [L855] sum += z [L856] y[i] = z [L853] ++i VAL [\old(n)=4, i=2, max=140, n=4, x={10:0}, x={10:0}, y={9:0}, y={9:0}, z=147] [L853] COND TRUE i < n [L854] EXPR x[i] [L854] float z = expf(x[i] - max); [L855] sum += z [L856] y[i] = z [L853] ++i VAL [\old(n)=4, i=3, max=140, n=4, x={10:0}, x={10:0}, y={9:0}, y={9:0}, z=142] [L853] COND TRUE i < n [L854] EXPR x[i] [L854] float z = expf(x[i] - max); [L855] sum += z [L856] y[i] = z [L853] ++i VAL [\old(n)=4, i=4, max=140, n=4, x={10:0}, x={10:0}, y={9:0}, y={9:0}, z=149] [L853] COND FALSE !(i < n) [L858] i = 0 VAL [\old(n)=4, i=0, max=140, n=4, x={10:0}, x={10:0}, y={9:0}, y={9:0}] [L858] COND TRUE i < n [L859] EXPR y[i] [L859] y[i] /= sum [L858] ++i VAL [\old(n)=4, i=1, max=140, n=4, x={10:0}, x={10:0}, y={9:0}, y={9:0}] [L858] COND TRUE i < n [L859] EXPR y[i] [L859] y[i] /= sum [L858] ++i VAL [\old(n)=4, i=2, max=140, n=4, x={10:0}, x={10:0}, y={9:0}, y={9:0}] [L858] COND TRUE i < n [L859] EXPR y[i] [L859] y[i] /= sum [L858] ++i VAL [\old(n)=4, i=3, max=140, n=4, x={10:0}, x={10:0}, y={9:0}, y={9:0}] [L858] COND TRUE i < n [L859] EXPR y[i] [L859] y[i] /= sum [L858] ++i VAL [\old(n)=4, i=4, max=140, n=4, x={10:0}, x={10:0}, y={9:0}, y={9:0}] [L858] COND FALSE !(i < n) [L872] RET softmax(x, y, 4) [L873] EXPR y[2] VAL [x={10:0}, y={9:0}] [L873] COND TRUE !(__builtin_islessequal(y[2], 1.0f)) [L873] reach_error() VAL [x={10:0}, y={9:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 5.5s, OverallIterations: 5, TraceHistogramMax: 4, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 20 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 20 mSDsluCounter, 30 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 21 mSDsCounter, 17 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 76 IncrementalHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 17 mSolverCounterUnsat, 9 mSDtfsCounter, 76 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 74 GetRequests, 42 SyntacticMatches, 4 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=4, InterpolantAutomatonStates: 19, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 70 NumberOfCodeBlocks, 69 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 65 ConstructedInterpolants, 0 QuantifiedInterpolants, 165 SizeOfPredicates, 2 NumberOfNonLiveVariables, 332 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 28/34 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-23 20:36:53,788 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38ee817-63fa-4b21-9a48-99c011680fcd/bin/utaipan-verify-mE87zJ7Ire/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_f38ee817-63fa-4b21-9a48-99c011680fcd/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38ee817-63fa-4b21-9a48-99c011680fcd/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_f38ee817-63fa-4b21-9a48-99c011680fcd/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38ee817-63fa-4b21-9a48-99c011680fcd/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/neural-networks/softmax_4_safe.c-amalgamation.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38ee817-63fa-4b21-9a48-99c011680fcd/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38ee817-63fa-4b21-9a48-99c011680fcd/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 40e574a11ca12b49ca5e943c34828a2bb84417bee7d51d8768967fd824c71eac --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 20:36:56,492 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 20:36:56,582 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38ee817-63fa-4b21-9a48-99c011680fcd/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2023-11-23 20:36:56,588 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 20:36:56,589 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 20:36:56,620 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 20:36:56,622 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 20:36:56,623 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 20:36:56,624 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 20:36:56,629 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 20:36:56,630 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 20:36:56,630 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 20:36:56,631 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 20:36:56,632 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 20:36:56,633 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 20:36:56,633 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 20:36:56,635 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 20:36:56,635 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 20:36:56,635 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 20:36:56,636 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 20:36:56,636 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 20:36:56,637 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 20:36:56,637 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 20:36:56,638 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 20:36:56,638 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-23 20:36:56,638 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-23 20:36:56,639 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-23 20:36:56,639 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 20:36:56,640 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 20:36:56,640 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 20:36:56,641 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 20:36:56,642 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 20:36:56,642 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 20:36:56,642 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 20:36:56,643 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 20:36:56,643 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 20:36:56,643 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 20:36:56,644 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 20:36:56,644 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-23 20:36:56,645 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-23 20:36:56,645 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 20:36:56,646 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 20:36:56,646 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 20:36:56,647 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 20:36:56,647 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_f38ee817-63fa-4b21-9a48-99c011680fcd/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38ee817-63fa-4b21-9a48-99c011680fcd/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 40e574a11ca12b49ca5e943c34828a2bb84417bee7d51d8768967fd824c71eac [2023-11-23 20:36:57,107 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 20:36:57,137 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 20:36:57,143 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 20:36:57,144 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 20:36:57,145 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 20:36:57,146 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38ee817-63fa-4b21-9a48-99c011680fcd/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/neural-networks/softmax_4_safe.c-amalgamation.i [2023-11-23 20:37:00,335 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 20:37:00,669 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 20:37:00,670 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38ee817-63fa-4b21-9a48-99c011680fcd/sv-benchmarks/c/neural-networks/softmax_4_safe.c-amalgamation.i [2023-11-23 20:37:00,691 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38ee817-63fa-4b21-9a48-99c011680fcd/bin/utaipan-verify-mE87zJ7Ire/data/b9cca81fb/3ec8ae9f9f544d7ca2efd9c3f0d0d421/FLAG80019a384 [2023-11-23 20:37:00,708 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38ee817-63fa-4b21-9a48-99c011680fcd/bin/utaipan-verify-mE87zJ7Ire/data/b9cca81fb/3ec8ae9f9f544d7ca2efd9c3f0d0d421 [2023-11-23 20:37:00,710 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 20:37:00,712 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 20:37:00,714 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 20:37:00,714 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 20:37:00,720 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 20:37:00,721 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:37:00" (1/1) ... [2023-11-23 20:37:00,722 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7dddde8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:37:00, skipping insertion in model container [2023-11-23 20:37:00,722 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:37:00" (1/1) ... [2023-11-23 20:37:00,795 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 20:37:01,131 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-23 20:37:01,777 WARN L635 FunctionHandler]: implicit declaration of function __builtin_isnan [2023-11-23 20:37:01,782 WARN L635 FunctionHandler]: implicit declaration of function __builtin_isinf_sign [2023-11-23 20:37:01,792 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_f38ee817-63fa-4b21-9a48-99c011680fcd/sv-benchmarks/c/neural-networks/softmax_4_safe.c-amalgamation.i[63646,63659] [2023-11-23 20:37:01,797 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:37:01,811 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 20:37:01,833 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-23 20:37:01,864 WARN L635 FunctionHandler]: implicit declaration of function __builtin_isnan [2023-11-23 20:37:01,865 WARN L635 FunctionHandler]: implicit declaration of function __builtin_isinf_sign [2023-11-23 20:37:01,868 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_f38ee817-63fa-4b21-9a48-99c011680fcd/sv-benchmarks/c/neural-networks/softmax_4_safe.c-amalgamation.i[63646,63659] [2023-11-23 20:37:01,870 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:37:02,017 WARN L675 CHandler]: The function __builtin_isnan is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:37:02,017 WARN L675 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:37:02,017 WARN L675 CHandler]: The function __builtin_isinf_sign is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:37:02,027 INFO L206 MainTranslator]: Completed translation [2023-11-23 20:37:02,028 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:37:02 WrapperNode [2023-11-23 20:37:02,028 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 20:37:02,030 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 20:37:02,030 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 20:37:02,030 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 20:37:02,040 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:37:02" (1/1) ... [2023-11-23 20:37:02,098 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:37:02" (1/1) ... [2023-11-23 20:37:02,132 INFO L138 Inliner]: procedures = 565, calls = 49, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 171 [2023-11-23 20:37:02,132 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 20:37:02,133 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 20:37:02,133 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 20:37:02,134 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 20:37:02,143 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:37:02" (1/1) ... [2023-11-23 20:37:02,143 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:37:02" (1/1) ... [2023-11-23 20:37:02,149 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:37:02" (1/1) ... [2023-11-23 20:37:02,149 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:37:02" (1/1) ... [2023-11-23 20:37:02,161 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:37:02" (1/1) ... [2023-11-23 20:37:02,165 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:37:02" (1/1) ... [2023-11-23 20:37:02,168 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:37:02" (1/1) ... [2023-11-23 20:37:02,171 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:37:02" (1/1) ... [2023-11-23 20:37:02,176 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 20:37:02,177 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 20:37:02,177 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 20:37:02,177 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 20:37:02,178 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:37:02" (1/1) ... [2023-11-23 20:37:02,184 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 20:37:02,199 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38ee817-63fa-4b21-9a48-99c011680fcd/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:37:02,213 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38ee817-63fa-4b21-9a48-99c011680fcd/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 20:37:02,269 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38ee817-63fa-4b21-9a48-99c011680fcd/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 20:37:02,320 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_isinf_sign [2023-11-23 20:37:02,321 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2023-11-23 20:37:02,321 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 20:37:02,321 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-23 20:37:02,321 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 20:37:02,321 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 20:37:02,322 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 20:37:02,322 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2023-11-23 20:37:02,322 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 20:37:02,323 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_isnan [2023-11-23 20:37:02,512 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 20:37:02,515 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 20:37:03,149 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 20:37:03,224 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 20:37:03,226 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-23 20:37:03,226 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:37:03 BoogieIcfgContainer [2023-11-23 20:37:03,227 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 20:37:03,231 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 20:37:03,231 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 20:37:03,234 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 20:37:03,237 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 08:37:00" (1/3) ... [2023-11-23 20:37:03,238 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1094175d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:37:03, skipping insertion in model container [2023-11-23 20:37:03,238 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:37:02" (2/3) ... [2023-11-23 20:37:03,239 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1094175d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:37:03, skipping insertion in model container [2023-11-23 20:37:03,240 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:37:03" (3/3) ... [2023-11-23 20:37:03,241 INFO L112 eAbstractionObserver]: Analyzing ICFG softmax_4_safe.c-amalgamation.i [2023-11-23 20:37:03,260 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 20:37:03,261 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 20:37:03,318 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 20:37:03,327 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;@58b1e37c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 20:37:03,328 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 20:37:03,332 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 24 states have (on average 1.7083333333333333) internal successors, (41), 25 states have internal predecessors, (41), 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) [2023-11-23 20:37:03,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-23 20:37:03,339 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:37:03,340 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] [2023-11-23 20:37:03,341 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 20:37:03,348 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:37:03,348 INFO L85 PathProgramCache]: Analyzing trace with hash -1337783981, now seen corresponding path program 1 times [2023-11-23 20:37:03,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 20:37:03,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [365914728] [2023-11-23 20:37:03,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:37:03,367 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 20:37:03,367 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38ee817-63fa-4b21-9a48-99c011680fcd/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 20:37:03,371 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38ee817-63fa-4b21-9a48-99c011680fcd/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-23 20:37:03,407 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38ee817-63fa-4b21-9a48-99c011680fcd/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-11-23 20:37:03,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:37:03,580 INFO L262 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-23 20:37:03,585 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:37:03,608 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 20:37:03,609 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 20:37:03,609 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 20:37:03,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [365914728] [2023-11-23 20:37:03,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [365914728] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:37:03,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:37:03,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 20:37:03,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065741949] [2023-11-23 20:37:03,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:37:03,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-23 20:37:03,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 20:37:03,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-23 20:37:03,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-23 20:37:03,657 INFO L87 Difference]: Start difference. First operand has 26 states, 24 states have (on average 1.7083333333333333) internal successors, (41), 25 states have internal predecessors, (41), 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 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 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) [2023-11-23 20:37:04,981 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 20:37:05,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:37:05,004 INFO L93 Difference]: Finished difference Result 49 states and 77 transitions. [2023-11-23 20:37:05,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-23 20:37:05,007 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 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 21 [2023-11-23 20:37:05,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:37:05,014 INFO L225 Difference]: With dead ends: 49 [2023-11-23 20:37:05,015 INFO L226 Difference]: Without dead ends: 24 [2023-11-23 20:37:05,017 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 20 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 20:37:05,021 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-23 20:37:05,023 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 29 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-23 20:37:05,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2023-11-23 20:37:05,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2023-11-23 20:37:05,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.3478260869565217) internal successors, (31), 23 states have internal predecessors, (31), 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) [2023-11-23 20:37:05,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 31 transitions. [2023-11-23 20:37:05,054 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 31 transitions. Word has length 21 [2023-11-23 20:37:05,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:37:05,055 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 31 transitions. [2023-11-23 20:37:05,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 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) [2023-11-23 20:37:05,056 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 31 transitions. [2023-11-23 20:37:05,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-23 20:37:05,057 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:37:05,057 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] [2023-11-23 20:37:05,066 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38ee817-63fa-4b21-9a48-99c011680fcd/bin/utaipan-verify-mE87zJ7Ire/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)] Ended with exit code 0 [2023-11-23 20:37:05,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38ee817-63fa-4b21-9a48-99c011680fcd/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 20:37:05,261 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 20:37:05,262 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:37:05,262 INFO L85 PathProgramCache]: Analyzing trace with hash 1399307338, now seen corresponding path program 1 times [2023-11-23 20:37:05,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 20:37:05,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1634588953] [2023-11-23 20:37:05,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:37:05,263 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 20:37:05,263 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38ee817-63fa-4b21-9a48-99c011680fcd/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 20:37:05,265 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38ee817-63fa-4b21-9a48-99c011680fcd/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-23 20:37:05,302 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38ee817-63fa-4b21-9a48-99c011680fcd/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-11-23 20:37:05,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:37:05,393 INFO L262 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-23 20:37:05,395 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:37:05,417 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 20:37:05,417 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 20:37:05,417 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 20:37:05,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1634588953] [2023-11-23 20:37:05,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1634588953] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:37:05,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:37:05,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 20:37:05,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823542827] [2023-11-23 20:37:05,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:37:05,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 20:37:05,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 20:37:05,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 20:37:05,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:37:05,422 INFO L87 Difference]: Start difference. First operand 24 states and 31 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 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) [2023-11-23 20:37:06,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:37:06,500 INFO L93 Difference]: Finished difference Result 40 states and 51 transitions. [2023-11-23 20:37:06,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 20:37:06,520 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 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 21 [2023-11-23 20:37:06,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:37:06,521 INFO L225 Difference]: With dead ends: 40 [2023-11-23 20:37:06,521 INFO L226 Difference]: Without dead ends: 24 [2023-11-23 20:37:06,521 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:37:06,522 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 0 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-23 20:37:06,523 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 52 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-23 20:37:06,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2023-11-23 20:37:06,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2023-11-23 20:37:06,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.3043478260869565) internal successors, (30), 23 states have internal predecessors, (30), 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) [2023-11-23 20:37:06,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 30 transitions. [2023-11-23 20:37:06,530 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 30 transitions. Word has length 21 [2023-11-23 20:37:06,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:37:06,531 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 30 transitions. [2023-11-23 20:37:06,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 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) [2023-11-23 20:37:06,531 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 30 transitions. [2023-11-23 20:37:06,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-23 20:37:06,532 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:37:06,533 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] [2023-11-23 20:37:06,542 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38ee817-63fa-4b21-9a48-99c011680fcd/bin/utaipan-verify-mE87zJ7Ire/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 [2023-11-23 20:37:06,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38ee817-63fa-4b21-9a48-99c011680fcd/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 20:37:06,737 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 20:37:06,738 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:37:06,738 INFO L85 PathProgramCache]: Analyzing trace with hash -1884542708, now seen corresponding path program 1 times [2023-11-23 20:37:06,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 20:37:06,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [164979870] [2023-11-23 20:37:06,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:37:06,739 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 20:37:06,739 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38ee817-63fa-4b21-9a48-99c011680fcd/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 20:37:06,740 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38ee817-63fa-4b21-9a48-99c011680fcd/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-23 20:37:06,772 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38ee817-63fa-4b21-9a48-99c011680fcd/bin/utaipan-verify-mE87zJ7Ire/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)] Waiting until timeout for monitored process [2023-11-23 20:37:06,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:37:06,862 INFO L262 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-23 20:37:06,865 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:37:06,924 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 20:37:06,924 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 20:37:06,925 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 20:37:06,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [164979870] [2023-11-23 20:37:06,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [164979870] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:37:06,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:37:06,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 20:37:06,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584962073] [2023-11-23 20:37:06,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:37:06,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 20:37:06,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 20:37:06,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 20:37:06,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:37:06,928 INFO L87 Difference]: Start difference. First operand 24 states and 30 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 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) [2023-11-23 20:37:08,649 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 20:37:08,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:37:08,697 INFO L93 Difference]: Finished difference Result 35 states and 44 transitions. [2023-11-23 20:37:08,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 20:37:08,698 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 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 21 [2023-11-23 20:37:08,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:37:08,699 INFO L225 Difference]: With dead ends: 35 [2023-11-23 20:37:08,699 INFO L226 Difference]: Without dead ends: 27 [2023-11-23 20:37:08,700 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:37:08,701 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 3 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-11-23 20:37:08,702 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 41 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-11-23 20:37:08,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2023-11-23 20:37:08,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2023-11-23 20:37:08,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.2916666666666667) internal successors, (31), 24 states have internal predecessors, (31), 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) [2023-11-23 20:37:08,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 31 transitions. [2023-11-23 20:37:08,708 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 31 transitions. Word has length 21 [2023-11-23 20:37:08,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:37:08,708 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 31 transitions. [2023-11-23 20:37:08,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 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) [2023-11-23 20:37:08,709 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 31 transitions. [2023-11-23 20:37:08,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-23 20:37:08,709 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:37:08,710 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] [2023-11-23 20:37:08,716 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38ee817-63fa-4b21-9a48-99c011680fcd/bin/utaipan-verify-mE87zJ7Ire/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)] Forceful destruction successful, exit code 0 [2023-11-23 20:37:08,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38ee817-63fa-4b21-9a48-99c011680fcd/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 20:37:08,916 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 20:37:08,916 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:37:08,917 INFO L85 PathProgramCache]: Analyzing trace with hash -753681454, now seen corresponding path program 1 times [2023-11-23 20:37:08,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 20:37:08,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1958761707] [2023-11-23 20:37:08,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:37:08,918 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 20:37:08,918 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38ee817-63fa-4b21-9a48-99c011680fcd/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 20:37:08,919 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38ee817-63fa-4b21-9a48-99c011680fcd/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-23 20:37:08,930 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38ee817-63fa-4b21-9a48-99c011680fcd/bin/utaipan-verify-mE87zJ7Ire/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 (5)] Waiting until timeout for monitored process [2023-11-23 20:37:09,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:37:09,072 INFO L262 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-23 20:37:09,075 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:37:09,202 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:37:09,202 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 20:37:09,316 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:37:09,317 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 20:37:09,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1958761707] [2023-11-23 20:37:09,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1958761707] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 20:37:09,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1190896567] [2023-11-23 20:37:09,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:37:09,318 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-23 20:37:09,318 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38ee817-63fa-4b21-9a48-99c011680fcd/bin/utaipan-verify-mE87zJ7Ire/cvc4 [2023-11-23 20:37:09,354 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38ee817-63fa-4b21-9a48-99c011680fcd/bin/utaipan-verify-mE87zJ7Ire/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-23 20:37:09,359 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38ee817-63fa-4b21-9a48-99c011680fcd/bin/utaipan-verify-mE87zJ7Ire/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2023-11-23 20:37:09,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:37:09,762 INFO L262 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-23 20:37:09,767 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:37:09,834 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:37:09,834 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 20:37:09,871 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:37:09,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1190896567] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 20:37:09,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2113457612] [2023-11-23 20:37:09,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:37:09,872 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:37:09,872 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38ee817-63fa-4b21-9a48-99c011680fcd/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:37:09,877 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38ee817-63fa-4b21-9a48-99c011680fcd/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 20:37:09,885 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38ee817-63fa-4b21-9a48-99c011680fcd/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-23 20:37:09,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:37:09,997 INFO L262 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-23 20:37:10,001 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:37:10,114 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-23 20:37:10,115 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 20:37:10,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2113457612] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:37:10,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 4 imperfect interpolant sequences. [2023-11-23 20:37:10,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4, 4, 4] total 8 [2023-11-23 20:37:10,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853741878] [2023-11-23 20:37:10,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:37:10,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 20:37:10,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 20:37:10,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 20:37:10,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-23 20:37:10,117 INFO L87 Difference]: Start difference. First operand 25 states and 31 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 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) [2023-11-23 20:37:11,397 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 20:37:11,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:37:11,457 INFO L93 Difference]: Finished difference Result 33 states and 41 transitions. [2023-11-23 20:37:11,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 20:37:11,458 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 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 24 [2023-11-23 20:37:11,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:37:11,459 INFO L225 Difference]: With dead ends: 33 [2023-11-23 20:37:11,459 INFO L226 Difference]: Without dead ends: 27 [2023-11-23 20:37:11,459 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-23 20:37:11,460 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 8 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-23 20:37:11,461 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 40 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-23 20:37:11,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2023-11-23 20:37:11,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2023-11-23 20:37:11,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.2692307692307692) internal successors, (33), 26 states have internal predecessors, (33), 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) [2023-11-23 20:37:11,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 33 transitions. [2023-11-23 20:37:11,472 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 33 transitions. Word has length 24 [2023-11-23 20:37:11,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:37:11,473 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 33 transitions. [2023-11-23 20:37:11,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 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) [2023-11-23 20:37:11,475 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 33 transitions. [2023-11-23 20:37:11,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-11-23 20:37:11,476 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:37:11,476 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 20:37:11,481 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38ee817-63fa-4b21-9a48-99c011680fcd/bin/utaipan-verify-mE87zJ7Ire/cvc4 --incremental --print-success --lang smt (6)] Forceful destruction successful, exit code 0 [2023-11-23 20:37:11,683 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38ee817-63fa-4b21-9a48-99c011680fcd/bin/utaipan-verify-mE87zJ7Ire/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 (5)] Forceful destruction successful, exit code 0 [2023-11-23 20:37:11,895 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38ee817-63fa-4b21-9a48-99c011680fcd/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-23 20:37:12,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38ee817-63fa-4b21-9a48-99c011680fcd/bin/utaipan-verify-mE87zJ7Ire/cvc4 --incremental --print-success --lang smt,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38ee817-63fa-4b21-9a48-99c011680fcd/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38ee817-63fa-4b21-9a48-99c011680fcd/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:37:12,081 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 20:37:12,082 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:37:12,082 INFO L85 PathProgramCache]: Analyzing trace with hash -531050106, now seen corresponding path program 1 times [2023-11-23 20:37:12,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 20:37:12,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1137076166] [2023-11-23 20:37:12,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:37:12,083 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 20:37:12,083 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38ee817-63fa-4b21-9a48-99c011680fcd/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 20:37:12,086 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38ee817-63fa-4b21-9a48-99c011680fcd/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-23 20:37:12,087 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38ee817-63fa-4b21-9a48-99c011680fcd/bin/utaipan-verify-mE87zJ7Ire/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 (8)] Waiting until timeout for monitored process [2023-11-23 20:37:12,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:37:12,428 INFO L262 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-23 20:37:12,430 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:37:12,552 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 20:37:12,553 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 20:37:12,640 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 20:37:12,640 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 20:37:12,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1137076166] [2023-11-23 20:37:12,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1137076166] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 20:37:12,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1930996304] [2023-11-23 20:37:12,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:37:12,641 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-23 20:37:12,641 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38ee817-63fa-4b21-9a48-99c011680fcd/bin/utaipan-verify-mE87zJ7Ire/cvc4 [2023-11-23 20:37:12,642 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38ee817-63fa-4b21-9a48-99c011680fcd/bin/utaipan-verify-mE87zJ7Ire/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-23 20:37:12,663 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38ee817-63fa-4b21-9a48-99c011680fcd/bin/utaipan-verify-mE87zJ7Ire/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2023-11-23 20:37:13,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:37:13,293 INFO L262 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-23 20:37:13,295 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:37:13,364 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 20:37:13,365 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 20:37:13,410 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 20:37:13,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1930996304] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 20:37:13,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1858459993] [2023-11-23 20:37:13,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:37:13,411 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:37:13,411 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38ee817-63fa-4b21-9a48-99c011680fcd/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:37:13,414 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38ee817-63fa-4b21-9a48-99c011680fcd/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 20:37:13,428 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38ee817-63fa-4b21-9a48-99c011680fcd/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-23 20:37:13,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:37:13,623 INFO L262 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-23 20:37:13,625 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:37:13,679 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 20:37:13,680 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 20:37:13,710 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 20:37:13,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1858459993] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 20:37:13,710 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-11-23 20:37:13,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 4, 4, 4] total 6 [2023-11-23 20:37:13,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792656140] [2023-11-23 20:37:13,711 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-11-23 20:37:13,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 20:37:13,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 20:37:13,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 20:37:13,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-23 20:37:13,713 INFO L87 Difference]: Start difference. First operand 27 states and 33 transitions. Second operand has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 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) [2023-11-23 20:37:14,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:37:14,762 INFO L93 Difference]: Finished difference Result 43 states and 54 transitions. [2023-11-23 20:37:14,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 20:37:14,764 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 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 26 [2023-11-23 20:37:14,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:37:14,765 INFO L225 Difference]: With dead ends: 43 [2023-11-23 20:37:14,765 INFO L226 Difference]: Without dead ends: 33 [2023-11-23 20:37:14,766 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-23 20:37:14,766 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 7 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-23 20:37:14,767 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 92 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-23 20:37:14,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2023-11-23 20:37:14,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2023-11-23 20:37:14,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.28125) internal successors, (41), 32 states have internal predecessors, (41), 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) [2023-11-23 20:37:14,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 41 transitions. [2023-11-23 20:37:14,774 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 41 transitions. Word has length 26 [2023-11-23 20:37:14,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:37:14,775 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 41 transitions. [2023-11-23 20:37:14,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 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) [2023-11-23 20:37:14,775 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 41 transitions. [2023-11-23 20:37:14,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-11-23 20:37:14,776 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:37:14,777 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 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 20:37:14,784 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38ee817-63fa-4b21-9a48-99c011680fcd/bin/utaipan-verify-mE87zJ7Ire/cvc4 --incremental --print-success --lang smt (9)] Forceful destruction successful, exit code 0 [2023-11-23 20:37:15,000 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38ee817-63fa-4b21-9a48-99c011680fcd/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-23 20:37:15,187 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38ee817-63fa-4b21-9a48-99c011680fcd/bin/utaipan-verify-mE87zJ7Ire/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 (8)] Forceful destruction successful, exit code 0 [2023-11-23 20:37:15,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38ee817-63fa-4b21-9a48-99c011680fcd/bin/utaipan-verify-mE87zJ7Ire/cvc4 --incremental --print-success --lang smt,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38ee817-63fa-4b21-9a48-99c011680fcd/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38ee817-63fa-4b21-9a48-99c011680fcd/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 20:37:15,381 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 20:37:15,381 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:37:15,381 INFO L85 PathProgramCache]: Analyzing trace with hash -1151371450, now seen corresponding path program 2 times [2023-11-23 20:37:15,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 20:37:15,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [865257214] [2023-11-23 20:37:15,382 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 20:37:15,382 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 20:37:15,383 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38ee817-63fa-4b21-9a48-99c011680fcd/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 20:37:15,384 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38ee817-63fa-4b21-9a48-99c011680fcd/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-23 20:37:15,387 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38ee817-63fa-4b21-9a48-99c011680fcd/bin/utaipan-verify-mE87zJ7Ire/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 (11)] Waiting until timeout for monitored process [2023-11-23 20:37:15,766 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-23 20:37:15,766 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 20:37:15,778 INFO L262 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-23 20:37:15,780 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:37:15,941 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-23 20:37:15,942 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 20:37:16,122 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-23 20:37:16,122 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 20:37:16,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [865257214] [2023-11-23 20:37:16,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [865257214] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 20:37:16,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1275849571] [2023-11-23 20:37:16,123 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 20:37:16,123 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-23 20:37:16,123 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38ee817-63fa-4b21-9a48-99c011680fcd/bin/utaipan-verify-mE87zJ7Ire/cvc4 [2023-11-23 20:37:16,131 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38ee817-63fa-4b21-9a48-99c011680fcd/bin/utaipan-verify-mE87zJ7Ire/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-23 20:37:16,132 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38ee817-63fa-4b21-9a48-99c011680fcd/bin/utaipan-verify-mE87zJ7Ire/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2023-11-23 20:37:16,895 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-23 20:37:16,895 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 20:37:16,902 INFO L262 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-23 20:37:16,904 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:37:16,997 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-23 20:37:16,997 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 20:37:17,072 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-23 20:37:17,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1275849571] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 20:37:17,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1993594808] [2023-11-23 20:37:17,073 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 20:37:17,073 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:37:17,073 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38ee817-63fa-4b21-9a48-99c011680fcd/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:37:17,074 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38ee817-63fa-4b21-9a48-99c011680fcd/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 20:37:17,088 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38ee817-63fa-4b21-9a48-99c011680fcd/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-23 20:37:17,319 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-23 20:37:17,319 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 20:37:17,322 INFO L262 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-23 20:37:17,324 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:37:17,421 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-23 20:37:17,421 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 20:37:17,505 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-23 20:37:17,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1993594808] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 20:37:17,505 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-11-23 20:37:17,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 8 [2023-11-23 20:37:17,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588172412] [2023-11-23 20:37:17,506 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-11-23 20:37:17,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-23 20:37:17,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 20:37:17,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-23 20:37:17,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-23 20:37:17,508 INFO L87 Difference]: Start difference. First operand 33 states and 41 transitions. Second operand has 8 states, 8 states have (on average 4.25) internal successors, (34), 8 states have internal predecessors, (34), 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) [2023-11-23 20:37:20,911 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 20:37:20,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:37:20,963 INFO L93 Difference]: Finished difference Result 46 states and 60 transitions. [2023-11-23 20:37:20,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-23 20:37:20,964 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.25) internal successors, (34), 8 states have internal predecessors, (34), 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 32 [2023-11-23 20:37:20,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:37:20,965 INFO L225 Difference]: With dead ends: 46 [2023-11-23 20:37:20,965 INFO L226 Difference]: Without dead ends: 39 [2023-11-23 20:37:20,965 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2023-11-23 20:37:20,966 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 48 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-11-23 20:37:20,967 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 72 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-11-23 20:37:20,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2023-11-23 20:37:20,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2023-11-23 20:37:20,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.236842105263158) internal successors, (47), 38 states have internal predecessors, (47), 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) [2023-11-23 20:37:20,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 47 transitions. [2023-11-23 20:37:20,976 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 47 transitions. Word has length 32 [2023-11-23 20:37:20,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:37:20,976 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 47 transitions. [2023-11-23 20:37:20,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.25) internal successors, (34), 8 states have internal predecessors, (34), 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) [2023-11-23 20:37:20,977 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 47 transitions. [2023-11-23 20:37:20,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-11-23 20:37:20,978 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:37:20,978 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:37:20,987 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38ee817-63fa-4b21-9a48-99c011680fcd/bin/utaipan-verify-mE87zJ7Ire/cvc4 --incremental --print-success --lang smt (12)] Ended with exit code 0 [2023-11-23 20:37:21,200 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38ee817-63fa-4b21-9a48-99c011680fcd/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-23 20:37:21,387 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38ee817-63fa-4b21-9a48-99c011680fcd/bin/utaipan-verify-mE87zJ7Ire/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 (11)] Forceful destruction successful, exit code 0 [2023-11-23 20:37:21,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38ee817-63fa-4b21-9a48-99c011680fcd/bin/utaipan-verify-mE87zJ7Ire/cvc4 --incremental --print-success --lang smt,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38ee817-63fa-4b21-9a48-99c011680fcd/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38ee817-63fa-4b21-9a48-99c011680fcd/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 20:37:21,580 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 20:37:21,580 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:37:21,580 INFO L85 PathProgramCache]: Analyzing trace with hash -1023957358, now seen corresponding path program 3 times [2023-11-23 20:37:21,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 20:37:21,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1148949995] [2023-11-23 20:37:21,581 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-23 20:37:21,581 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 20:37:21,581 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38ee817-63fa-4b21-9a48-99c011680fcd/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 20:37:21,585 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38ee817-63fa-4b21-9a48-99c011680fcd/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-23 20:37:21,587 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38ee817-63fa-4b21-9a48-99c011680fcd/bin/utaipan-verify-mE87zJ7Ire/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 (14)] Waiting until timeout for monitored process [2023-11-23 20:37:25,528 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-11-23 20:37:25,528 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2023-11-23 20:37:25,528 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 20:37:27,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 20:37:27,452 INFO L130 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2023-11-23 20:37:27,453 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-23 20:37:27,454 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-23 20:37:27,491 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38ee817-63fa-4b21-9a48-99c011680fcd/bin/utaipan-verify-mE87zJ7Ire/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 (14)] Forceful destruction successful, exit code 0 [2023-11-23 20:37:27,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38ee817-63fa-4b21-9a48-99c011680fcd/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 20:37:27,660 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1] [2023-11-23 20:37:27,664 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-23 20:37:27,710 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem103 could not be translated [2023-11-23 20:37:27,711 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret104 could not be translated [2023-11-23 20:37:27,711 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem101 could not be translated [2023-11-23 20:37:27,711 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret102 could not be translated [2023-11-23 20:37:27,713 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short105 could not be translated [2023-11-23 20:37:27,714 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short110 could not be translated [2023-11-23 20:37:27,714 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem106 could not be translated [2023-11-23 20:37:27,714 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret109 could not be translated [2023-11-23 20:37:27,714 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret107 could not be translated [2023-11-23 20:37:27,714 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem108 could not be translated [2023-11-23 20:37:27,715 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem111 could not be translated [2023-11-23 20:37:27,715 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short115 could not be translated [2023-11-23 20:37:27,715 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret112 could not be translated [2023-11-23 20:37:27,715 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem113 could not be translated [2023-11-23 20:37:27,715 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret114 could not be translated [2023-11-23 20:37:27,716 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem116 could not be translated [2023-11-23 20:37:27,716 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret117 could not be translated [2023-11-23 20:37:27,716 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret119 could not be translated [2023-11-23 20:37:27,716 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem118 could not be translated [2023-11-23 20:37:27,716 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short120 could not be translated [2023-11-23 20:37:27,718 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem90 could not be translated [2023-11-23 20:37:27,719 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem90 could not be translated [2023-11-23 20:37:27,720 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem90 could not be translated [2023-11-23 20:37:27,726 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: Expected StepInfo for loop construct to contain Condition, but it did not [2023-11-23 20:37:27,731 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem121 could not be translated [2023-11-23 20:37:27,758 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 08:37:27 BoogieIcfgContainer [2023-11-23 20:37:27,758 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-23 20:37:27,759 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-23 20:37:27,759 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-23 20:37:27,759 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-23 20:37:27,760 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:37:03" (3/4) ... [2023-11-23 20:37:27,762 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-23 20:37:27,764 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-23 20:37:27,765 INFO L158 Benchmark]: Toolchain (without parser) took 27052.48ms. Allocated memory was 75.5MB in the beginning and 125.8MB in the end (delta: 50.3MB). Free memory was 46.2MB in the beginning and 70.0MB in the end (delta: -23.8MB). Peak memory consumption was 24.7MB. Max. memory is 16.1GB. [2023-11-23 20:37:27,765 INFO L158 Benchmark]: CDTParser took 1.31ms. Allocated memory is still 75.5MB. Free memory is still 51.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 20:37:27,766 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1314.93ms. Allocated memory was 75.5MB in the beginning and 104.9MB in the end (delta: 29.4MB). Free memory was 46.0MB in the beginning and 51.3MB in the end (delta: -5.3MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2023-11-23 20:37:27,766 INFO L158 Benchmark]: Boogie Procedure Inliner took 103.02ms. Allocated memory is still 104.9MB. Free memory was 51.3MB in the beginning and 76.4MB in the end (delta: -25.1MB). Peak memory consumption was 5.1MB. Max. memory is 16.1GB. [2023-11-23 20:37:27,768 INFO L158 Benchmark]: Boogie Preprocessor took 42.93ms. Allocated memory is still 104.9MB. Free memory was 76.4MB in the beginning and 74.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 20:37:27,768 INFO L158 Benchmark]: RCFGBuilder took 1050.87ms. Allocated memory is still 104.9MB. Free memory was 74.3MB in the beginning and 55.4MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-23 20:37:27,769 INFO L158 Benchmark]: TraceAbstraction took 24527.35ms. Allocated memory was 104.9MB in the beginning and 125.8MB in the end (delta: 21.0MB). Free memory was 54.9MB in the beginning and 70.0MB in the end (delta: -15.1MB). Peak memory consumption was 4.9MB. Max. memory is 16.1GB. [2023-11-23 20:37:27,769 INFO L158 Benchmark]: Witness Printer took 5.18ms. Allocated memory is still 125.8MB. Free memory is still 70.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 20:37:27,771 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.31ms. Allocated memory is still 75.5MB. Free memory is still 51.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1314.93ms. Allocated memory was 75.5MB in the beginning and 104.9MB in the end (delta: 29.4MB). Free memory was 46.0MB in the beginning and 51.3MB in the end (delta: -5.3MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 103.02ms. Allocated memory is still 104.9MB. Free memory was 51.3MB in the beginning and 76.4MB in the end (delta: -25.1MB). Peak memory consumption was 5.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 42.93ms. Allocated memory is still 104.9MB. Free memory was 76.4MB in the beginning and 74.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1050.87ms. Allocated memory is still 104.9MB. Free memory was 74.3MB in the beginning and 55.4MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 24527.35ms. Allocated memory was 104.9MB in the beginning and 125.8MB in the end (delta: 21.0MB). Free memory was 54.9MB in the beginning and 70.0MB in the end (delta: -15.1MB). Peak memory consumption was 4.9MB. Max. memory is 16.1GB. * Witness Printer took 5.18ms. Allocated memory is still 125.8MB. Free memory is still 70.0MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem103 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret104 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem101 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret102 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short105 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short110 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem106 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret109 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret107 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem108 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem111 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short115 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret112 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem113 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret114 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem116 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret117 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret119 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem118 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short120 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem90 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem90 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem90 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expected StepInfo for loop construct to contain Condition, but it did not - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem121 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * 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: 873]: 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 expf at line 854. Possible FailurePath: [L863] float x[4], y[4]; [L864] x[0] = __VERIFIER_nondet_float() [L865] x[1] = __VERIFIER_nondet_float() [L866] x[2] = __VERIFIER_nondet_float() [L867] x[3] = __VERIFIER_nondet_float() [L868] EXPR x[0] [L868] EXPR !__builtin_isnan (x[0]) && !__builtin_isinf_sign (x[0]) [L868] EXPR x[0] [L868] EXPR !__builtin_isnan (x[0]) && !__builtin_isinf_sign (x[0]) VAL [x={7:0}, y={3:0}] [L868] COND FALSE !(!(!__builtin_isnan (x[0]) && !__builtin_isinf_sign (x[0]))) [L869] EXPR x[1] [L869] EXPR !__builtin_isnan (x[1]) && !__builtin_isinf_sign (x[1]) [L869] EXPR x[1] [L869] EXPR !__builtin_isnan (x[1]) && !__builtin_isinf_sign (x[1]) VAL [x={7:0}, y={3:0}] [L869] COND FALSE !(!(!__builtin_isnan (x[1]) && !__builtin_isinf_sign (x[1]))) [L870] EXPR x[2] [L870] EXPR !__builtin_isnan (x[2]) && !__builtin_isinf_sign (x[2]) [L870] EXPR x[2] [L870] EXPR !__builtin_isnan (x[2]) && !__builtin_isinf_sign (x[2]) VAL [x={7:0}, y={3:0}] [L870] COND FALSE !(!(!__builtin_isnan (x[2]) && !__builtin_isinf_sign (x[2]))) [L871] EXPR x[3] [L871] EXPR !__builtin_isnan (x[3]) && !__builtin_isinf_sign (x[3]) [L871] EXPR x[3] [L871] EXPR !__builtin_isnan (x[3]) && !__builtin_isinf_sign (x[3]) VAL [x={7:0}, y={3:0}] [L871] COND FALSE !(!(!__builtin_isnan (x[3]) && !__builtin_isinf_sign (x[3]))) [L872] CALL softmax(x, y, 4) [L847] int i; [L848] EXPR x[0] [L848] float max = x[0]; [L849] i = 1 VAL [\old(n)=4, i=1, max=0.0, n=4, x={7:0}, x={7:0}, y={3:0}, y={3:0}] [L849] COND TRUE i < n [L850] EXPR x[i] VAL [\old(n)=4, i=1, max=0.0, n=4, x={7:0}, x={7:0}, y={3:0}, y={3:0}] [L850] COND TRUE x[i] > max [L851] EXPR x[i] [L851] max = x[i] [L849] ++i VAL [\old(n)=4, i=2, max=2.0, n=4, x={7:0}, x={7:0}, y={3:0}, y={3:0}] [L849] COND TRUE i < n [L850] EXPR x[i] VAL [\old(n)=4, i=2, max=2.0, n=4, x={7:0}, x={7:0}, y={3:0}, y={3:0}] [L850] COND TRUE x[i] > max [L851] EXPR x[i] [L851] max = x[i] [L849] ++i VAL [\old(n)=4, i=3, max=36893488147419103000, n=4, x={7:0}, x={7:0}, y={3:0}, y={3:0}] [L849] COND TRUE i < n [L850] EXPR x[i] VAL [\old(n)=4, i=3, max=36893488147419103000, n=4, x={7:0}, x={7:0}, y={3:0}, y={3:0}] [L850] COND TRUE x[i] > max [L851] EXPR x[i] [L851] max = x[i] [L849] ++i VAL [\old(n)=4, i=4, max=158456325028528680000000000000, n=4, x={7:0}, x={7:0}, y={3:0}, y={3:0}] [L849] COND FALSE !(i < n) VAL [\old(n)=4, i=4, max=158456325028528680000000000000, n=4, x={7:0}, x={7:0}, y={3:0}, y={3:0}] [L852] float sum = 0.0f; [L853] i = 0 VAL [\old(n)=4, i=0, max=158456325028528680000000000000, n=4, sum=0.0, x={7:0}, x={7:0}, y={3:0}, y={3:0}] [L853] COND TRUE i < n [L854] EXPR x[i] [L854] float z = expf(x[i] - max); [L855] sum += z [L856] y[i] = z [L853] ++i VAL [\old(n)=4, i=1, max=158456325028528680000000000000, n=4, sum=0.0000000000000000008672643891700637, x={7:0}, x={7:0}, y={3:0}, y={3:0}, z=0.0000000000000000008672643891700637] [L853] COND TRUE i < n [L854] EXPR x[i] [L854] float z = expf(x[i] - max); [L855] sum += z [L856] y[i] = z [L853] ++i VAL [\old(n)=4, i=2, max=158456325028528680000000000000, n=4, sum=-0.0000000000000000000004759907437359829, x={7:0}, x={7:0}, y={3:0}, y={3:0}, z=-0.0000000000000000008677403799137997] [L853] COND TRUE i < n [L854] EXPR x[i] [L854] float z = expf(x[i] - max); [L855] sum += z [L856] y[i] = z [L853] ++i VAL [\old(n)=4, i=3, max=158456325028528680000000000000, n=4, sum=-6184752906240, x={7:0}, x={7:0}, y={3:0}, y={3:0}, z=-6184752906240] [L853] COND TRUE i < n [L854] EXPR x[i] [L854] float z = expf(x[i] - max); [L855] sum += z [L856] y[i] = z [L853] ++i VAL [\old(n)=4, i=4, max=158456325028528680000000000000, n=4, sum=-3985729650688, x={7:0}, x={7:0}, y={3:0}, y={3:0}, z=2199023255552] [L853] COND FALSE !(i < n) VAL [\old(n)=4, i=4, max=158456325028528680000000000000, n=4, sum=-3985729650688, x={7:0}, x={7:0}, y={3:0}, y={3:0}, z=2199023255552] [L858] i = 0 VAL [\old(n)=4, i=0, max=158456325028528680000000000000, n=4, sum=-3985729650688, x={7:0}, x={7:0}, y={3:0}, y={3:0}] [L858] COND TRUE i < n [L859] EXPR y[i] [L859] y[i] /= sum [L858] ++i VAL [\old(n)=4, i=1, max=158456325028528680000000000000, n=4, sum=-3985729650688, x={7:0}, x={7:0}, y={3:0}, y={3:0}] [L858] COND TRUE i < n [L859] EXPR y[i] [L859] y[i] /= sum [L858] ++i VAL [\old(n)=4, i=2, max=158456325028528680000000000000, n=4, sum=-3985729650688, x={7:0}, x={7:0}, y={3:0}, y={3:0}] [L858] COND TRUE i < n [L859] EXPR y[i] [L859] y[i] /= sum [L858] ++i VAL [\old(n)=4, i=3, max=158456325028528680000000000000, n=4, sum=-3985729650688, x={7:0}, x={7:0}, y={3:0}, y={3:0}] [L858] COND TRUE i < n [L859] EXPR y[i] [L859] y[i] /= sum [L858] ++i VAL [\old(n)=4, i=4, max=158456325028528680000000000000, n=4, sum=-3985729650688, x={7:0}, x={7:0}, y={3:0}, y={3:0}] [L858] COND FALSE !(i < n) VAL [\old(n)=4, i=4, max=158456325028528680000000000000, n=4, sum=-3985729650688, x={7:0}, x={7:0}, y={3:0}, y={3:0}] [L872] RET softmax(x, y, 4) [L873] EXPR y[2] VAL [x={7:0}, y={3:0}] [L873] COND TRUE !(__builtin_islessequal(y[2], 1.0f)) [L873] reach_error() VAL [x={7:0}, y={3:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 26 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 24.4s, OverallIterations: 7, TraceHistogramMax: 4, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 10.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 66 SdHoareTripleChecker+Valid, 9.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 66 mSDsluCounter, 326 SdHoareTripleChecker+Invalid, 9.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 176 mSDsCounter, 21 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 155 IncrementalHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 21 mSolverCounterUnsat, 150 mSDtfsCounter, 155 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 513 GetRequests, 493 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred in iteration=6, InterpolantAutomatonStates: 24, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 6.5s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 347 NumberOfCodeBlocks, 347 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 511 ConstructedInterpolants, 0 QuantifiedInterpolants, 910 SizeOfPredicates, 10 NumberOfNonLiveVariables, 1151 ConjunctsInSsa, 51 ConjunctsInUnsatCore, 20 InterpolantComputations, 4 PerfectInterpolantSequences, 91/107 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-23 20:37:27,840 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38ee817-63fa-4b21-9a48-99c011680fcd/bin/utaipan-verify-mE87zJ7Ire/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 Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample