./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/neural-networks/softmax_2_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_87d3715e-d169-4097-a634-888cd4b72687/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d3715e-d169-4097-a634-888cd4b72687/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_87d3715e-d169-4097-a634-888cd4b72687/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d3715e-d169-4097-a634-888cd4b72687/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/neural-networks/softmax_2_safe.c-amalgamation.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d3715e-d169-4097-a634-888cd4b72687/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_87d3715e-d169-4097-a634-888cd4b72687/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 d3eac94ab0c7cf6fc17507626d85e821af2b5795e07a82a02c7c055a57a1c94b --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:22:10,376 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:22:10,450 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d3715e-d169-4097-a634-888cd4b72687/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-23 21:22:10,457 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:22:10,457 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:22:10,514 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:22:10,515 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:22:10,515 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:22:10,516 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:22:10,521 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:22:10,522 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:22:10,522 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:22:10,523 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:22:10,524 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 21:22:10,525 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:22:10,525 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:22:10,525 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 21:22:10,526 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 21:22:10,526 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:22:10,527 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 21:22:10,527 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 21:22:10,528 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 21:22:10,529 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:22:10,529 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:22:10,530 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 21:22:10,530 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:22:10,530 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 21:22:10,531 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:22:10,531 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:22:10,532 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:22:10,533 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:22:10,550 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 21:22:10,551 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:22:10,551 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:22:10,551 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:22:10,551 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:22:10,552 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:22:10,552 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:22:10,552 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:22:10,553 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:22:10,553 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:22:10,554 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 21:22:10,554 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:22:10,554 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:22:10,555 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:22:10,555 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:22:10,555 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:22:10,555 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_87d3715e-d169-4097-a634-888cd4b72687/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d3715e-d169-4097-a634-888cd4b72687/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d3eac94ab0c7cf6fc17507626d85e821af2b5795e07a82a02c7c055a57a1c94b [2023-11-23 21:22:10,871 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:22:10,910 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:22:10,913 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:22:10,915 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:22:10,916 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:22:10,917 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d3715e-d169-4097-a634-888cd4b72687/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/neural-networks/softmax_2_safe.c-amalgamation.i [2023-11-23 21:22:14,129 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:22:14,532 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:22:14,533 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d3715e-d169-4097-a634-888cd4b72687/sv-benchmarks/c/neural-networks/softmax_2_safe.c-amalgamation.i [2023-11-23 21:22:14,568 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d3715e-d169-4097-a634-888cd4b72687/bin/utaipan-verify-mE87zJ7Ire/data/cca7a8c09/8a111787c39b4f17a33c916916e7abbb/FLAGba5d12b41 [2023-11-23 21:22:14,584 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d3715e-d169-4097-a634-888cd4b72687/bin/utaipan-verify-mE87zJ7Ire/data/cca7a8c09/8a111787c39b4f17a33c916916e7abbb [2023-11-23 21:22:14,587 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:22:14,589 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:22:14,591 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:22:14,591 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:22:14,597 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:22:14,598 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:22:14" (1/1) ... [2023-11-23 21:22:14,599 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32770ec6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:14, skipping insertion in model container [2023-11-23 21:22:14,600 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:22:14" (1/1) ... [2023-11-23 21:22:14,661 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:22:14,943 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-23 21:22:15,420 WARN L635 FunctionHandler]: implicit declaration of function __builtin_isnan [2023-11-23 21:22:15,422 WARN L635 FunctionHandler]: implicit declaration of function __builtin_isinf_sign [2023-11-23 21:22:15,426 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_87d3715e-d169-4097-a634-888cd4b72687/sv-benchmarks/c/neural-networks/softmax_2_safe.c-amalgamation.i[63649,63662] [2023-11-23 21:22:15,430 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:22:15,440 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:22:15,459 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-23 21:22:15,491 WARN L635 FunctionHandler]: implicit declaration of function __builtin_isnan [2023-11-23 21:22:15,492 WARN L635 FunctionHandler]: implicit declaration of function __builtin_isinf_sign [2023-11-23 21:22:15,495 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_87d3715e-d169-4097-a634-888cd4b72687/sv-benchmarks/c/neural-networks/softmax_2_safe.c-amalgamation.i[63649,63662] [2023-11-23 21:22:15,496 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:22:15,687 WARN L675 CHandler]: The function __builtin_isnan is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:22:15,707 WARN L675 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:22:15,707 WARN L675 CHandler]: The function __builtin_isinf_sign is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:22:15,716 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:22:15,716 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:15 WrapperNode [2023-11-23 21:22:15,716 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:22:15,718 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:22:15,718 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:22:15,718 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:22:15,726 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:15" (1/1) ... [2023-11-23 21:22:15,748 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:15" (1/1) ... [2023-11-23 21:22:15,780 INFO L138 Inliner]: procedures = 564, calls = 49, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 178 [2023-11-23 21:22:15,781 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:22:15,781 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:22:15,781 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:22:15,782 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:22:15,797 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:15" (1/1) ... [2023-11-23 21:22:15,798 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:15" (1/1) ... [2023-11-23 21:22:15,803 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:15" (1/1) ... [2023-11-23 21:22:15,803 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:15" (1/1) ... [2023-11-23 21:22:15,815 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:15" (1/1) ... [2023-11-23 21:22:15,820 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:15" (1/1) ... [2023-11-23 21:22:15,822 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:15" (1/1) ... [2023-11-23 21:22:15,824 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:15" (1/1) ... [2023-11-23 21:22:15,828 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:22:15,828 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:22:15,829 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:22:15,829 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:22:15,830 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:15" (1/1) ... [2023-11-23 21:22:15,846 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:22:15,862 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d3715e-d169-4097-a634-888cd4b72687/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:22:15,873 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d3715e-d169-4097-a634-888cd4b72687/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:22:15,906 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d3715e-d169-4097-a634-888cd4b72687/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:22:15,915 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2023-11-23 21:22:15,916 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_isinf_sign [2023-11-23 21:22:15,916 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 21:22:15,916 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2023-11-23 21:22:15,916 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:22:15,917 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:22:15,918 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:22:15,918 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 21:22:15,919 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_isnan [2023-11-23 21:22:15,919 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 21:22:16,074 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:22:16,076 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:22:16,321 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:22:16,594 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:22:16,595 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-23 21:22:16,597 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:22:16 BoogieIcfgContainer [2023-11-23 21:22:16,597 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:22:16,602 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:22:16,602 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:22:16,606 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:22:16,606 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:22:14" (1/3) ... [2023-11-23 21:22:16,607 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27f1fbbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:22:16, skipping insertion in model container [2023-11-23 21:22:16,607 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:15" (2/3) ... [2023-11-23 21:22:16,607 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27f1fbbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:22:16, skipping insertion in model container [2023-11-23 21:22:16,608 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:22:16" (3/3) ... [2023-11-23 21:22:16,609 INFO L112 eAbstractionObserver]: Analyzing ICFG softmax_2_safe.c-amalgamation.i [2023-11-23 21:22:16,628 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:22:16,628 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 21:22:16,686 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:22:16,695 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;@699f648d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:22:16,696 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 21:22:16,700 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 21:22:16,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-23 21:22:16,707 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:22:16,707 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-23 21:22:16,708 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:22:16,716 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:22:16,716 INFO L85 PathProgramCache]: Analyzing trace with hash 935320817, now seen corresponding path program 1 times [2023-11-23 21:22:16,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:22:16,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730038165] [2023-11-23 21:22:16,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:22:16,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:22:16,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:22:17,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:22:17,254 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:22:17,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730038165] [2023-11-23 21:22:17,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730038165] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:22:17,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:22:17,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:22:17,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472957726] [2023-11-23 21:22:17,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:22:17,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:22:17,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:22:17,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:22:17,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:22:17,306 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 21:22:17,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:22:17,414 INFO L93 Difference]: Finished difference Result 17 states and 23 transitions. [2023-11-23 21:22:17,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:22:17,417 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 21:22:17,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:22:17,425 INFO L225 Difference]: With dead ends: 17 [2023-11-23 21:22:17,425 INFO L226 Difference]: Without dead ends: 8 [2023-11-23 21:22:17,427 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 21:22:17,431 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 0 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:22:17,432 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:22:17,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2023-11-23 21:22:17,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2023-11-23 21:22:17,465 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 21:22:17,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 10 transitions. [2023-11-23 21:22:17,467 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 10 transitions. Word has length 6 [2023-11-23 21:22:17,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:22:17,467 INFO L495 AbstractCegarLoop]: Abstraction has 8 states and 10 transitions. [2023-11-23 21:22:17,468 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 21:22:17,468 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 10 transitions. [2023-11-23 21:22:17,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-23 21:22:17,468 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:22:17,468 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:22:17,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 21:22:17,469 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:22:17,469 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:22:17,470 INFO L85 PathProgramCache]: Analyzing trace with hash -1520158920, now seen corresponding path program 1 times [2023-11-23 21:22:17,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:22:17,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814872825] [2023-11-23 21:22:17,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:22:17,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:22:17,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:22:17,679 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 21:22:17,679 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:22:17,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814872825] [2023-11-23 21:22:17,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814872825] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:22:17,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:22:17,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:22:17,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226331843] [2023-11-23 21:22:17,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:22:17,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:22:17,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:22:17,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:22:17,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:22:17,684 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 21:22:17,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:22:17,716 INFO L93 Difference]: Finished difference Result 14 states and 18 transitions. [2023-11-23 21:22:17,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:22:17,716 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 21:22:17,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:22:17,717 INFO L225 Difference]: With dead ends: 14 [2023-11-23 21:22:17,717 INFO L226 Difference]: Without dead ends: 10 [2023-11-23 21:22:17,718 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 21:22:17,719 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, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:22:17,720 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 6 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 21:22:17,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2023-11-23 21:22:17,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2023-11-23 21:22:17,724 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 21:22:17,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 12 transitions. [2023-11-23 21:22:17,725 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 12 transitions. Word has length 7 [2023-11-23 21:22:17,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:22:17,725 INFO L495 AbstractCegarLoop]: Abstraction has 10 states and 12 transitions. [2023-11-23 21:22:17,725 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 21:22:17,726 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 12 transitions. [2023-11-23 21:22:17,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-23 21:22:17,726 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:22:17,726 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:22:17,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-23 21:22:17,727 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:22:17,727 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:22:17,728 INFO L85 PathProgramCache]: Analyzing trace with hash -1117199878, now seen corresponding path program 1 times [2023-11-23 21:22:17,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:22:17,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619140305] [2023-11-23 21:22:17,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:22:17,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:22:17,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:22:17,886 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 21:22:17,886 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:22:17,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619140305] [2023-11-23 21:22:17,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619140305] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:22:17,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [572704265] [2023-11-23 21:22:17,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:22:17,888 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:22:17,888 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d3715e-d169-4097-a634-888cd4b72687/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:22:17,890 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d3715e-d169-4097-a634-888cd4b72687/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:22:17,918 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d3715e-d169-4097-a634-888cd4b72687/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-23 21:22:18,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:22:18,049 INFO L262 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-23 21:22:18,054 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:22:18,109 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 21:22:18,109 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:22:18,134 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 21:22:18,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [572704265] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:22:18,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [265012886] [2023-11-23 21:22:18,154 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2023-11-23 21:22:18,154 INFO L166 IcfgInterpreter]: Building call graph [2023-11-23 21:22:18,158 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-23 21:22:18,164 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-23 21:22:18,164 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-23 21:22:19,386 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-23 21:22:19,898 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 21:22:19,899 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-23 21:22:19,899 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 21:22:19,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2023-11-23 21:22:19,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015612644] [2023-11-23 21:22:19,900 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 21:22:19,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-23 21:22:19,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:22:19,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-23 21:22:19,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2023-11-23 21:22:19,905 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 21:22:19,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:22:19,949 INFO L93 Difference]: Finished difference Result 19 states and 24 transitions. [2023-11-23 21:22:19,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 21:22:19,950 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 21:22:19,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:22:19,951 INFO L225 Difference]: With dead ends: 19 [2023-11-23 21:22:19,951 INFO L226 Difference]: Without dead ends: 12 [2023-11-23 21:22:19,954 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2023-11-23 21:22:19,957 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 21:22:19,959 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 21:22:19,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2023-11-23 21:22:19,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2023-11-23 21:22:19,966 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 21:22:19,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2023-11-23 21:22:19,968 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 14 transitions. Word has length 9 [2023-11-23 21:22:19,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:22:19,968 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 14 transitions. [2023-11-23 21:22:19,968 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 21:22:19,969 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 14 transitions. [2023-11-23 21:22:19,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-23 21:22:19,969 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:22:19,969 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:22:19,999 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d3715e-d169-4097-a634-888cd4b72687/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-23 21:22:20,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d3715e-d169-4097-a634-888cd4b72687/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:22:20,189 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:22:20,189 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:22:20,189 INFO L85 PathProgramCache]: Analyzing trace with hash -635540198, now seen corresponding path program 2 times [2023-11-23 21:22:20,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:22:20,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780772046] [2023-11-23 21:22:20,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:22:20,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:22:20,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:22:20,388 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 21:22:20,388 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:22:20,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780772046] [2023-11-23 21:22:20,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780772046] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:22:20,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1861116897] [2023-11-23 21:22:20,392 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-23 21:22:20,394 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:22:20,395 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d3715e-d169-4097-a634-888cd4b72687/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:22:20,396 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d3715e-d169-4097-a634-888cd4b72687/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:22:20,417 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d3715e-d169-4097-a634-888cd4b72687/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-23 21:22:20,559 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-23 21:22:20,559 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 21:22:20,561 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-23 21:22:20,562 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:22:20,602 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 21:22:20,602 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:22:20,635 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 21:22:20,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1861116897] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:22:20,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [216982275] [2023-11-23 21:22:20,645 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2023-11-23 21:22:20,645 INFO L166 IcfgInterpreter]: Building call graph [2023-11-23 21:22:20,646 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-23 21:22:20,646 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-23 21:22:20,646 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-23 21:22:21,315 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-23 21:22:21,772 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 21:22:21,772 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-23 21:22:21,772 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 21:22:21,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2023-11-23 21:22:21,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6494061] [2023-11-23 21:22:21,773 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 21:22:21,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-23 21:22:21,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:22:21,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-23 21:22:21,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2023-11-23 21:22:21,777 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 21:22:21,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:22:21,861 INFO L93 Difference]: Finished difference Result 23 states and 31 transitions. [2023-11-23 21:22:21,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-23 21:22:21,862 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 21:22:21,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:22:21,863 INFO L225 Difference]: With dead ends: 23 [2023-11-23 21:22:21,863 INFO L226 Difference]: Without dead ends: 18 [2023-11-23 21:22:21,864 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 21:22:21,866 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 21:22:21,867 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 21:22:21,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2023-11-23 21:22:21,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2023-11-23 21:22:21,872 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 21:22:21,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2023-11-23 21:22:21,873 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 11 [2023-11-23 21:22:21,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:22:21,874 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2023-11-23 21:22:21,874 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 21:22:21,874 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2023-11-23 21:22:21,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-23 21:22:21,874 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:22:21,875 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1] [2023-11-23 21:22:21,906 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d3715e-d169-4097-a634-888cd4b72687/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-23 21:22:22,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d3715e-d169-4097-a634-888cd4b72687/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:22:22,075 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:22:22,076 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:22:22,076 INFO L85 PathProgramCache]: Analyzing trace with hash 1983738328, now seen corresponding path program 3 times [2023-11-23 21:22:22,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:22:22,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918505565] [2023-11-23 21:22:22,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:22:22,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:22:22,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:22:22,128 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 21:22:22,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:22:22,203 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-23 21:22:22,203 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-23 21:22:22,205 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-23 21:22:22,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-23 21:22:22,212 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1, 1] [2023-11-23 21:22:22,222 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-23 21:22:22,252 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem91 could not be translated [2023-11-23 21:22:22,255 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem91 could not be translated [2023-11-23 21:22:22,256 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem91 could not be translated [2023-11-23 21:22:22,256 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem91 could not be translated [2023-11-23 21:22:22,257 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem91 could not be translated [2023-11-23 21:22:22,258 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem91 could not be translated [2023-11-23 21:22:22,258 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem91 could not be translated [2023-11-23 21:22:22,260 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem91 could not be translated [2023-11-23 21:22:22,261 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: Expected StepInfo for loop construct to contain Condition, but it did not [2023-11-23 21:22:22,269 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem91 could not be translated [2023-11-23 21:22:22,270 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem91 could not be translated [2023-11-23 21:22:22,270 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem91 could not be translated [2023-11-23 21:22:22,271 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem91 could not be translated [2023-11-23 21:22:22,271 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem91 could not be translated [2023-11-23 21:22:22,271 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem121 could not be translated [2023-11-23 21:22:22,282 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 09:22:22 BoogieIcfgContainer [2023-11-23 21:22:22,285 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-23 21:22:22,288 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-23 21:22:22,288 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-23 21:22:22,288 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-23 21:22:22,289 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:22:16" (3/4) ... [2023-11-23 21:22:22,293 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-23 21:22:22,294 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-23 21:22:22,297 INFO L158 Benchmark]: Toolchain (without parser) took 7706.47ms. Allocated memory was 169.9MB in the beginning and 247.5MB in the end (delta: 77.6MB). Free memory was 135.5MB in the beginning and 101.4MB in the end (delta: 34.1MB). Peak memory consumption was 112.5MB. Max. memory is 16.1GB. [2023-11-23 21:22:22,297 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 123.7MB. Free memory is still 96.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 21:22:22,298 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1126.20ms. Allocated memory is still 169.9MB. Free memory was 135.5MB in the beginning and 136.4MB in the end (delta: -876.2kB). Peak memory consumption was 70.3MB. Max. memory is 16.1GB. [2023-11-23 21:22:22,299 INFO L158 Benchmark]: Boogie Procedure Inliner took 63.19ms. Allocated memory is still 169.9MB. Free memory was 136.4MB in the beginning and 133.1MB in the end (delta: 3.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 21:22:22,299 INFO L158 Benchmark]: Boogie Preprocessor took 46.44ms. Allocated memory is still 169.9MB. Free memory was 133.1MB in the beginning and 131.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 21:22:22,299 INFO L158 Benchmark]: RCFGBuilder took 770.46ms. Allocated memory is still 169.9MB. Free memory was 131.0MB in the beginning and 99.5MB in the end (delta: 31.5MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. [2023-11-23 21:22:22,300 INFO L158 Benchmark]: TraceAbstraction took 5683.77ms. Allocated memory was 169.9MB in the beginning and 247.5MB in the end (delta: 77.6MB). Free memory was 98.8MB in the beginning and 101.4MB in the end (delta: -2.6MB). Peak memory consumption was 73.7MB. Max. memory is 16.1GB. [2023-11-23 21:22:22,300 INFO L158 Benchmark]: Witness Printer took 6.57ms. Allocated memory is still 247.5MB. Free memory is still 101.4MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 21:22:22,303 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 123.7MB. Free memory is still 96.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1126.20ms. Allocated memory is still 169.9MB. Free memory was 135.5MB in the beginning and 136.4MB in the end (delta: -876.2kB). Peak memory consumption was 70.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 63.19ms. Allocated memory is still 169.9MB. Free memory was 136.4MB in the beginning and 133.1MB in the end (delta: 3.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 46.44ms. Allocated memory is still 169.9MB. Free memory was 133.1MB in the beginning and 131.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 770.46ms. Allocated memory is still 169.9MB. Free memory was 131.0MB in the beginning and 99.5MB in the end (delta: 31.5MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. * TraceAbstraction took 5683.77ms. Allocated memory was 169.9MB in the beginning and 247.5MB in the end (delta: 77.6MB). Free memory was 98.8MB in the beginning and 101.4MB in the end (delta: -2.6MB). Peak memory consumption was 73.7MB. Max. memory is 16.1GB. * Witness Printer took 6.57ms. Allocated memory is still 247.5MB. Free memory is still 101.4MB. 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[0] VAL [x={10:0}, y={9:0}] [L873] COND TRUE !(__builtin_isgreaterequal(y[0], 0.0f)) [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: 0.4s, 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, 0.2s 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, 0.2s SatisfiabilityAnalysisTime, 0.9s 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 21:22:22,329 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d3715e-d169-4097-a634-888cd4b72687/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_87d3715e-d169-4097-a634-888cd4b72687/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d3715e-d169-4097-a634-888cd4b72687/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_87d3715e-d169-4097-a634-888cd4b72687/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d3715e-d169-4097-a634-888cd4b72687/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/neural-networks/softmax_2_safe.c-amalgamation.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d3715e-d169-4097-a634-888cd4b72687/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_87d3715e-d169-4097-a634-888cd4b72687/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 d3eac94ab0c7cf6fc17507626d85e821af2b5795e07a82a02c7c055a57a1c94b --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:22:25,017 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:22:25,146 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d3715e-d169-4097-a634-888cd4b72687/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2023-11-23 21:22:25,155 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:22:25,156 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:22:25,193 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:22:25,193 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:22:25,194 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:22:25,195 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:22:25,200 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:22:25,201 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:22:25,201 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:22:25,202 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:22:25,203 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:22:25,204 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:22:25,204 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:22:25,205 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:22:25,206 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:22:25,206 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 21:22:25,207 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 21:22:25,208 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:22:25,208 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:22:25,209 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:22:25,209 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:22:25,210 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-23 21:22:25,210 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-23 21:22:25,210 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-23 21:22:25,211 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 21:22:25,211 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:22:25,212 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:22:25,213 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:22:25,213 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 21:22:25,213 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:22:25,214 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:22:25,214 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:22:25,214 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:22:25,215 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:22:25,215 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:22:25,215 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-23 21:22:25,216 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-23 21:22:25,216 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:22:25,217 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:22:25,217 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:22:25,217 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:22:25,218 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_87d3715e-d169-4097-a634-888cd4b72687/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d3715e-d169-4097-a634-888cd4b72687/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d3eac94ab0c7cf6fc17507626d85e821af2b5795e07a82a02c7c055a57a1c94b [2023-11-23 21:22:25,659 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:22:25,683 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:22:25,686 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:22:25,688 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:22:25,689 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:22:25,690 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d3715e-d169-4097-a634-888cd4b72687/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/neural-networks/softmax_2_safe.c-amalgamation.i [2023-11-23 21:22:28,811 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:22:29,206 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:22:29,214 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d3715e-d169-4097-a634-888cd4b72687/sv-benchmarks/c/neural-networks/softmax_2_safe.c-amalgamation.i [2023-11-23 21:22:29,240 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d3715e-d169-4097-a634-888cd4b72687/bin/utaipan-verify-mE87zJ7Ire/data/16272acce/4751c2c6a1254ce6964ade4a93acc3da/FLAGb553b65ce [2023-11-23 21:22:29,259 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d3715e-d169-4097-a634-888cd4b72687/bin/utaipan-verify-mE87zJ7Ire/data/16272acce/4751c2c6a1254ce6964ade4a93acc3da [2023-11-23 21:22:29,266 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:22:29,267 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:22:29,274 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:22:29,274 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:22:29,280 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:22:29,281 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:22:29" (1/1) ... [2023-11-23 21:22:29,282 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@556ab4f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:29, skipping insertion in model container [2023-11-23 21:22:29,282 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:22:29" (1/1) ... [2023-11-23 21:22:29,363 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:22:29,687 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-23 21:22:30,721 WARN L635 FunctionHandler]: implicit declaration of function __builtin_isnan [2023-11-23 21:22:30,722 WARN L635 FunctionHandler]: implicit declaration of function __builtin_isinf_sign [2023-11-23 21:22:30,730 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_87d3715e-d169-4097-a634-888cd4b72687/sv-benchmarks/c/neural-networks/softmax_2_safe.c-amalgamation.i[63649,63662] [2023-11-23 21:22:30,741 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:22:30,758 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:22:30,791 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-23 21:22:30,843 WARN L635 FunctionHandler]: implicit declaration of function __builtin_isnan [2023-11-23 21:22:30,845 WARN L635 FunctionHandler]: implicit declaration of function __builtin_isinf_sign [2023-11-23 21:22:30,879 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_87d3715e-d169-4097-a634-888cd4b72687/sv-benchmarks/c/neural-networks/softmax_2_safe.c-amalgamation.i[63649,63662] [2023-11-23 21:22:30,880 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:22:31,094 WARN L675 CHandler]: The function __builtin_isnan is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:22:31,097 WARN L675 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:22:31,097 WARN L675 CHandler]: The function __builtin_isinf_sign is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:22:31,104 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:22:31,105 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:31 WrapperNode [2023-11-23 21:22:31,105 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:22:31,106 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:22:31,106 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:22:31,106 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:22:31,115 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:31" (1/1) ... [2023-11-23 21:22:31,156 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:31" (1/1) ... [2023-11-23 21:22:31,199 INFO L138 Inliner]: procedures = 565, calls = 49, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 171 [2023-11-23 21:22:31,199 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:22:31,200 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:22:31,200 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:22:31,201 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:22:31,209 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:31" (1/1) ... [2023-11-23 21:22:31,209 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:31" (1/1) ... [2023-11-23 21:22:31,215 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:31" (1/1) ... [2023-11-23 21:22:31,215 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:31" (1/1) ... [2023-11-23 21:22:31,227 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:31" (1/1) ... [2023-11-23 21:22:31,231 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:31" (1/1) ... [2023-11-23 21:22:31,234 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:31" (1/1) ... [2023-11-23 21:22:31,237 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:31" (1/1) ... [2023-11-23 21:22:31,242 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:22:31,243 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:22:31,243 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:22:31,243 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:22:31,251 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:31" (1/1) ... [2023-11-23 21:22:31,265 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:22:31,284 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d3715e-d169-4097-a634-888cd4b72687/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:22:31,295 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d3715e-d169-4097-a634-888cd4b72687/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:22:31,309 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d3715e-d169-4097-a634-888cd4b72687/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:22:31,340 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_isinf_sign [2023-11-23 21:22:31,346 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2023-11-23 21:22:31,347 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 21:22:31,347 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-23 21:22:31,347 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:22:31,347 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:22:31,347 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:22:31,348 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2023-11-23 21:22:31,348 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 21:22:31,348 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_isnan [2023-11-23 21:22:31,488 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:22:31,492 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:22:32,168 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:22:32,261 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:22:32,261 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-23 21:22:32,262 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:22:32 BoogieIcfgContainer [2023-11-23 21:22:32,263 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:22:32,266 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:22:32,266 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:22:32,269 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:22:32,271 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:22:29" (1/3) ... [2023-11-23 21:22:32,273 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@378aeda7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:22:32, skipping insertion in model container [2023-11-23 21:22:32,273 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:31" (2/3) ... [2023-11-23 21:22:32,275 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@378aeda7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:22:32, skipping insertion in model container [2023-11-23 21:22:32,275 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:22:32" (3/3) ... [2023-11-23 21:22:32,277 INFO L112 eAbstractionObserver]: Analyzing ICFG softmax_2_safe.c-amalgamation.i [2023-11-23 21:22:32,298 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:22:32,299 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 21:22:32,363 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:22:32,371 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@12379c9f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:22:32,371 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 21:22:32,376 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 21:22:32,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-23 21:22:32,384 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:22:32,384 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 21:22:32,385 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:22:32,393 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:22:32,393 INFO L85 PathProgramCache]: Analyzing trace with hash -1337783981, now seen corresponding path program 1 times [2023-11-23 21:22:32,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:22:32,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [567633461] [2023-11-23 21:22:32,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:22:32,414 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 21:22:32,414 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d3715e-d169-4097-a634-888cd4b72687/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:22:32,417 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d3715e-d169-4097-a634-888cd4b72687/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 21:22:32,428 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d3715e-d169-4097-a634-888cd4b72687/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 21:22:32,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:22:32,577 INFO L262 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-23 21:22:32,583 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:22:32,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:22:32,606 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:22:32,607 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:22:32,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [567633461] [2023-11-23 21:22:32,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [567633461] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:22:32,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:22:32,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:22:32,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149777933] [2023-11-23 21:22:32,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:22:32,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-23 21:22:32,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:22:32,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-23 21:22:32,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-23 21:22:32,650 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 21:22:33,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:22:33,699 INFO L93 Difference]: Finished difference Result 49 states and 77 transitions. [2023-11-23 21:22:33,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-23 21:22:33,702 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 21:22:33,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:22:33,711 INFO L225 Difference]: With dead ends: 49 [2023-11-23 21:22:33,712 INFO L226 Difference]: Without dead ends: 24 [2023-11-23 21:22:33,715 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 21:22:33,720 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s 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, 1.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:22:33,722 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 29 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-23 21:22:33,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2023-11-23 21:22:33,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2023-11-23 21:22:33,754 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 21:22:33,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 31 transitions. [2023-11-23 21:22:33,757 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 31 transitions. Word has length 21 [2023-11-23 21:22:33,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:22:33,757 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 31 transitions. [2023-11-23 21:22:33,758 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 21:22:33,758 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 31 transitions. [2023-11-23 21:22:33,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-23 21:22:33,759 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:22:33,759 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 21:22:33,767 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d3715e-d169-4097-a634-888cd4b72687/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 21:22:33,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d3715e-d169-4097-a634-888cd4b72687/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 21:22:33,964 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:22:33,964 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:22:33,965 INFO L85 PathProgramCache]: Analyzing trace with hash 1399307338, now seen corresponding path program 1 times [2023-11-23 21:22:33,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:22:33,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [624044312] [2023-11-23 21:22:33,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:22:33,966 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 21:22:33,966 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d3715e-d169-4097-a634-888cd4b72687/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:22:33,967 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d3715e-d169-4097-a634-888cd4b72687/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 21:22:34,030 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d3715e-d169-4097-a634-888cd4b72687/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 21:22:34,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:22:34,128 INFO L262 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-23 21:22:34,130 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:22:34,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:22:34,153 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:22:34,153 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:22:34,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [624044312] [2023-11-23 21:22:34,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [624044312] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:22:34,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:22:34,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:22:34,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081756588] [2023-11-23 21:22:34,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:22:34,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:22:34,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:22:34,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:22:34,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:22:34,170 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 21:22:35,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:22:35,635 INFO L93 Difference]: Finished difference Result 40 states and 51 transitions. [2023-11-23 21:22:35,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:22:35,654 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 21:22:35,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:22:35,655 INFO L225 Difference]: With dead ends: 40 [2023-11-23 21:22:35,655 INFO L226 Difference]: Without dead ends: 24 [2023-11-23 21:22:35,655 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 21:22:35,657 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 0 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s 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, 1.5s IncrementalHoareTripleChecker+Time [2023-11-23 21:22:35,658 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 52 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-23 21:22:35,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2023-11-23 21:22:35,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2023-11-23 21:22:35,663 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 21:22:35,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 30 transitions. [2023-11-23 21:22:35,664 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 30 transitions. Word has length 21 [2023-11-23 21:22:35,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:22:35,665 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 30 transitions. [2023-11-23 21:22:35,665 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 21:22:35,665 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 30 transitions. [2023-11-23 21:22:35,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-23 21:22:35,666 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:22:35,666 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 21:22:35,671 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d3715e-d169-4097-a634-888cd4b72687/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)] Forceful destruction successful, exit code 0 [2023-11-23 21:22:35,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d3715e-d169-4097-a634-888cd4b72687/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 21:22:35,868 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:22:35,868 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:22:35,868 INFO L85 PathProgramCache]: Analyzing trace with hash -1884542708, now seen corresponding path program 1 times [2023-11-23 21:22:35,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:22:35,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [402184171] [2023-11-23 21:22:35,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:22:35,870 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 21:22:35,870 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d3715e-d169-4097-a634-888cd4b72687/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:22:35,871 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d3715e-d169-4097-a634-888cd4b72687/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 21:22:35,886 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d3715e-d169-4097-a634-888cd4b72687/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 21:22:35,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:22:36,003 INFO L262 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-23 21:22:36,005 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:22:36,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:22:36,068 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:22:36,068 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:22:36,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [402184171] [2023-11-23 21:22:36,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [402184171] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:22:36,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:22:36,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:22:36,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146311486] [2023-11-23 21:22:36,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:22:36,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:22:36,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:22:36,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:22:36,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:22:36,072 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 21:22:37,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:22:37,279 INFO L93 Difference]: Finished difference Result 35 states and 44 transitions. [2023-11-23 21:22:37,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:22:37,280 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 21:22:37,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:22:37,281 INFO L225 Difference]: With dead ends: 35 [2023-11-23 21:22:37,281 INFO L226 Difference]: Without dead ends: 27 [2023-11-23 21:22:37,281 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 21:22:37,283 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 3 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s 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, 1.2s IncrementalHoareTripleChecker+Time [2023-11-23 21:22:37,284 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 41 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-23 21:22:37,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2023-11-23 21:22:37,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2023-11-23 21:22:37,289 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 21:22:37,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 31 transitions. [2023-11-23 21:22:37,290 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 31 transitions. Word has length 21 [2023-11-23 21:22:37,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:22:37,290 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 31 transitions. [2023-11-23 21:22:37,291 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 21:22:37,291 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 31 transitions. [2023-11-23 21:22:37,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-23 21:22:37,292 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:22:37,292 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 21:22:37,300 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d3715e-d169-4097-a634-888cd4b72687/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 21:22:37,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d3715e-d169-4097-a634-888cd4b72687/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 21:22:37,495 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:22:37,495 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:22:37,496 INFO L85 PathProgramCache]: Analyzing trace with hash -753681454, now seen corresponding path program 1 times [2023-11-23 21:22:37,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:22:37,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [628229685] [2023-11-23 21:22:37,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:22:37,497 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 21:22:37,497 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d3715e-d169-4097-a634-888cd4b72687/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:22:37,498 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d3715e-d169-4097-a634-888cd4b72687/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 21:22:37,505 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d3715e-d169-4097-a634-888cd4b72687/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 21:22:37,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:22:37,645 INFO L262 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-23 21:22:37,647 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:22:37,759 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 21:22:37,759 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:22:37,855 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 21:22:37,856 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:22:37,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [628229685] [2023-11-23 21:22:37,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [628229685] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:22:37,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [352194305] [2023-11-23 21:22:37,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:22:37,857 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-23 21:22:37,858 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d3715e-d169-4097-a634-888cd4b72687/bin/utaipan-verify-mE87zJ7Ire/cvc4 [2023-11-23 21:22:37,862 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d3715e-d169-4097-a634-888cd4b72687/bin/utaipan-verify-mE87zJ7Ire/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-23 21:22:37,906 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d3715e-d169-4097-a634-888cd4b72687/bin/utaipan-verify-mE87zJ7Ire/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2023-11-23 21:22:38,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:22:38,227 INFO L262 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-23 21:22:38,230 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:22:38,304 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 21:22:38,304 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:22:38,343 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 21:22:38,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [352194305] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:22:38,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [398940197] [2023-11-23 21:22:38,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:22:38,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:22:38,345 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d3715e-d169-4097-a634-888cd4b72687/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:22:38,350 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d3715e-d169-4097-a634-888cd4b72687/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:22:38,375 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d3715e-d169-4097-a634-888cd4b72687/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-23 21:22:38,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:22:38,473 INFO L262 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-23 21:22:38,476 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:22:38,598 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 21:22:38,598 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:22:38,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [398940197] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:22:38,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 4 imperfect interpolant sequences. [2023-11-23 21:22:38,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4, 4, 4] total 8 [2023-11-23 21:22:38,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804445121] [2023-11-23 21:22:38,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:22:38,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:22:38,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:22:38,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:22:38,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-23 21:22:38,602 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 21:22:40,161 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:22:40,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:22:40,216 INFO L93 Difference]: Finished difference Result 33 states and 41 transitions. [2023-11-23 21:22:40,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:22:40,216 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 21:22:40,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:22:40,217 INFO L225 Difference]: With dead ends: 33 [2023-11-23 21:22:40,217 INFO L226 Difference]: Without dead ends: 27 [2023-11-23 21:22:40,218 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 21:22:40,219 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 8 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s 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, 1.6s IncrementalHoareTripleChecker+Time [2023-11-23 21:22:40,220 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 40 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-23 21:22:40,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2023-11-23 21:22:40,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2023-11-23 21:22:40,225 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 21:22:40,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 33 transitions. [2023-11-23 21:22:40,226 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 33 transitions. Word has length 24 [2023-11-23 21:22:40,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:22:40,227 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 33 transitions. [2023-11-23 21:22:40,227 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 21:22:40,227 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 33 transitions. [2023-11-23 21:22:40,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-11-23 21:22:40,228 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:22:40,228 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:22:40,240 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d3715e-d169-4097-a634-888cd4b72687/bin/utaipan-verify-mE87zJ7Ire/cvc4 --incremental --print-success --lang smt (6)] Forceful destruction successful, exit code 0 [2023-11-23 21:22:40,446 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d3715e-d169-4097-a634-888cd4b72687/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-23 21:22:40,636 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d3715e-d169-4097-a634-888cd4b72687/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 21:22:40,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d3715e-d169-4097-a634-888cd4b72687/bin/utaipan-verify-mE87zJ7Ire/cvc4 --incremental --print-success --lang smt,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d3715e-d169-4097-a634-888cd4b72687/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d3715e-d169-4097-a634-888cd4b72687/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 21:22:40,833 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:22:40,834 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:22:40,834 INFO L85 PathProgramCache]: Analyzing trace with hash -531050106, now seen corresponding path program 1 times [2023-11-23 21:22:40,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:22:40,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [542849419] [2023-11-23 21:22:40,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:22:40,835 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 21:22:40,835 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d3715e-d169-4097-a634-888cd4b72687/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:22:40,842 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d3715e-d169-4097-a634-888cd4b72687/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 21:22:40,844 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d3715e-d169-4097-a634-888cd4b72687/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 21:22:41,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:22:41,185 INFO L262 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-23 21:22:41,187 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:22:41,299 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 21:22:41,299 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:22:41,377 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 21:22:41,378 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:22:41,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [542849419] [2023-11-23 21:22:41,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [542849419] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:22:41,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [910798854] [2023-11-23 21:22:41,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:22:41,378 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-23 21:22:41,379 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d3715e-d169-4097-a634-888cd4b72687/bin/utaipan-verify-mE87zJ7Ire/cvc4 [2023-11-23 21:22:41,381 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d3715e-d169-4097-a634-888cd4b72687/bin/utaipan-verify-mE87zJ7Ire/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-23 21:22:41,387 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d3715e-d169-4097-a634-888cd4b72687/bin/utaipan-verify-mE87zJ7Ire/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2023-11-23 21:22:42,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:22:42,067 INFO L262 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-23 21:22:42,069 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:22:42,134 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 21:22:42,134 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:22:42,166 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 21:22:42,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [910798854] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:22:42,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1520755307] [2023-11-23 21:22:42,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:22:42,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:22:42,167 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d3715e-d169-4097-a634-888cd4b72687/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:22:42,171 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d3715e-d169-4097-a634-888cd4b72687/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:22:42,201 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d3715e-d169-4097-a634-888cd4b72687/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-23 21:22:42,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:22:42,399 INFO L262 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-23 21:22:42,401 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:22:42,459 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 21:22:42,459 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:22:42,491 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 21:22:42,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1520755307] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:22:42,491 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-11-23 21:22:42,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 4, 4, 4] total 6 [2023-11-23 21:22:42,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224581837] [2023-11-23 21:22:42,492 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-11-23 21:22:42,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 21:22:42,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:22:42,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 21:22:42,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-23 21:22:42,494 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 21:22:45,133 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.75s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:22:45,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:22:45,198 INFO L93 Difference]: Finished difference Result 43 states and 54 transitions. [2023-11-23 21:22:45,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 21:22:45,199 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 21:22:45,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:22:45,200 INFO L225 Difference]: With dead ends: 43 [2023-11-23 21:22:45,200 INFO L226 Difference]: Without dead ends: 33 [2023-11-23 21:22:45,200 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 21:22:45,201 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 7 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s 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, 2.7s IncrementalHoareTripleChecker+Time [2023-11-23 21:22:45,202 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 92 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-11-23 21:22:45,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2023-11-23 21:22:45,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2023-11-23 21:22:45,208 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 21:22:45,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 41 transitions. [2023-11-23 21:22:45,209 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 41 transitions. Word has length 26 [2023-11-23 21:22:45,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:22:45,209 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 41 transitions. [2023-11-23 21:22:45,210 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 21:22:45,210 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 41 transitions. [2023-11-23 21:22:45,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-11-23 21:22:45,211 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:22:45,211 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 21:22:45,219 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d3715e-d169-4097-a634-888cd4b72687/bin/utaipan-verify-mE87zJ7Ire/cvc4 --incremental --print-success --lang smt (9)] Forceful destruction successful, exit code 0 [2023-11-23 21:22:45,454 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d3715e-d169-4097-a634-888cd4b72687/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-23 21:22:45,623 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d3715e-d169-4097-a634-888cd4b72687/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 21:22:45,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d3715e-d169-4097-a634-888cd4b72687/bin/utaipan-verify-mE87zJ7Ire/cvc4 --incremental --print-success --lang smt,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d3715e-d169-4097-a634-888cd4b72687/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d3715e-d169-4097-a634-888cd4b72687/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 21:22:45,818 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:22:45,818 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:22:45,818 INFO L85 PathProgramCache]: Analyzing trace with hash -1151371450, now seen corresponding path program 2 times [2023-11-23 21:22:45,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:22:45,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [906354607] [2023-11-23 21:22:45,819 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 21:22:45,819 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 21:22:45,819 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d3715e-d169-4097-a634-888cd4b72687/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:22:45,821 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d3715e-d169-4097-a634-888cd4b72687/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 21:22:45,823 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d3715e-d169-4097-a634-888cd4b72687/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 21:22:46,162 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-23 21:22:46,162 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 21:22:46,173 INFO L262 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-23 21:22:46,175 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:22:46,323 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 21:22:46,323 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:22:46,493 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 21:22:46,494 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:22:46,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [906354607] [2023-11-23 21:22:46,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [906354607] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:22:46,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [333597039] [2023-11-23 21:22:46,494 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 21:22:46,495 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-23 21:22:46,495 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d3715e-d169-4097-a634-888cd4b72687/bin/utaipan-verify-mE87zJ7Ire/cvc4 [2023-11-23 21:22:46,503 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d3715e-d169-4097-a634-888cd4b72687/bin/utaipan-verify-mE87zJ7Ire/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-23 21:22:46,509 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d3715e-d169-4097-a634-888cd4b72687/bin/utaipan-verify-mE87zJ7Ire/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2023-11-23 21:22:47,347 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-23 21:22:47,347 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 21:22:47,357 INFO L262 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-23 21:22:47,359 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:22:47,448 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 21:22:47,448 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:22:47,520 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 21:22:47,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [333597039] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:22:47,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1663495664] [2023-11-23 21:22:47,520 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 21:22:47,520 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:22:47,521 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d3715e-d169-4097-a634-888cd4b72687/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:22:47,522 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d3715e-d169-4097-a634-888cd4b72687/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:22:47,523 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d3715e-d169-4097-a634-888cd4b72687/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-23 21:22:47,736 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-23 21:22:47,736 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 21:22:47,739 INFO L262 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-23 21:22:47,741 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:22:47,838 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 21:22:47,839 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:22:47,918 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 21:22:47,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1663495664] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:22:47,919 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-11-23 21:22:47,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 8 [2023-11-23 21:22:47,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613482470] [2023-11-23 21:22:47,919 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-11-23 21:22:47,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-23 21:22:47,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:22:47,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-23 21:22:47,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-23 21:22:47,922 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 21:22:49,743 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:22:50,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:22:50,725 INFO L93 Difference]: Finished difference Result 46 states and 60 transitions. [2023-11-23 21:22:50,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-23 21:22:50,726 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 21:22:50,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:22:50,727 INFO L225 Difference]: With dead ends: 46 [2023-11-23 21:22:50,727 INFO L226 Difference]: Without dead ends: 39 [2023-11-23 21:22:50,728 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 21:22:50,729 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 48 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s 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, 2.7s IncrementalHoareTripleChecker+Time [2023-11-23 21:22:50,729 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 72 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-11-23 21:22:50,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2023-11-23 21:22:50,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2023-11-23 21:22:50,739 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 21:22:50,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 47 transitions. [2023-11-23 21:22:50,740 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 47 transitions. Word has length 32 [2023-11-23 21:22:50,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:22:50,740 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 47 transitions. [2023-11-23 21:22:50,741 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 21:22:50,741 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 47 transitions. [2023-11-23 21:22:50,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-11-23 21:22:50,742 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:22:50,742 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 21:22:50,749 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d3715e-d169-4097-a634-888cd4b72687/bin/utaipan-verify-mE87zJ7Ire/cvc4 --incremental --print-success --lang smt (12)] Forceful destruction successful, exit code 0 [2023-11-23 21:22:50,967 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d3715e-d169-4097-a634-888cd4b72687/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-23 21:22:51,153 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d3715e-d169-4097-a634-888cd4b72687/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 21:22:51,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d3715e-d169-4097-a634-888cd4b72687/bin/utaipan-verify-mE87zJ7Ire/cvc4 --incremental --print-success --lang smt,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d3715e-d169-4097-a634-888cd4b72687/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d3715e-d169-4097-a634-888cd4b72687/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 21:22:51,347 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:22:51,347 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:22:51,347 INFO L85 PathProgramCache]: Analyzing trace with hash -1023957358, now seen corresponding path program 3 times [2023-11-23 21:22:51,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:22:51,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [285293544] [2023-11-23 21:22:51,348 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-23 21:22:51,349 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 21:22:51,349 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d3715e-d169-4097-a634-888cd4b72687/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:22:51,350 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d3715e-d169-4097-a634-888cd4b72687/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 21:22:51,351 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d3715e-d169-4097-a634-888cd4b72687/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 21:22:53,823 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-11-23 21:22:53,823 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2023-11-23 21:22:53,824 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 21:22:55,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:22:55,967 INFO L130 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2023-11-23 21:22:55,968 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-23 21:22:55,969 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-23 21:22:55,999 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d3715e-d169-4097-a634-888cd4b72687/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 21:22:56,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d3715e-d169-4097-a634-888cd4b72687/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 21:22:56,176 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1] [2023-11-23 21:22:56,179 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-23 21:22:56,216 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short105 could not be translated [2023-11-23 21:22:56,218 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret102 could not be translated [2023-11-23 21:22:56,219 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem103 could not be translated [2023-11-23 21:22:56,219 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret104 could not be translated [2023-11-23 21:22:56,219 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem101 could not be translated [2023-11-23 21:22:56,219 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret107 could not be translated [2023-11-23 21:22:56,220 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret109 could not be translated [2023-11-23 21:22:56,220 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short110 could not be translated [2023-11-23 21:22:56,220 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem108 could not be translated [2023-11-23 21:22:56,220 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem106 could not be translated [2023-11-23 21:22:56,221 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem111 could not be translated [2023-11-23 21:22:56,221 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret112 could not be translated [2023-11-23 21:22:56,221 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem113 could not be translated [2023-11-23 21:22:56,221 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short115 could not be translated [2023-11-23 21:22:56,221 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret114 could not be translated [2023-11-23 21:22:56,222 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem116 could not be translated [2023-11-23 21:22:56,222 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem118 could not be translated [2023-11-23 21:22:56,222 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret117 could not be translated [2023-11-23 21:22:56,222 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret119 could not be translated [2023-11-23 21:22:56,222 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short120 could not be translated [2023-11-23 21:22:56,224 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem90 could not be translated [2023-11-23 21:22:56,225 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem90 could not be translated [2023-11-23 21:22:56,226 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem90 could not be translated [2023-11-23 21:22:56,232 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: Expected StepInfo for loop construct to contain Condition, but it did not [2023-11-23 21:22:56,235 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem121 could not be translated [2023-11-23 21:22:56,248 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 09:22:56 BoogieIcfgContainer [2023-11-23 21:22:56,249 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-23 21:22:56,249 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-23 21:22:56,249 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-23 21:22:56,250 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-23 21:22:56,250 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:22:32" (3/4) ... [2023-11-23 21:22:56,252 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-23 21:22:56,254 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-23 21:22:56,254 INFO L158 Benchmark]: Toolchain (without parser) took 26987.08ms. Allocated memory was 73.4MB in the beginning and 121.6MB in the end (delta: 48.2MB). Free memory was 46.9MB in the beginning and 83.5MB in the end (delta: -36.5MB). Peak memory consumption was 14.3MB. Max. memory is 16.1GB. [2023-11-23 21:22:56,255 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 73.4MB. Free memory is still 49.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 21:22:56,255 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1831.32ms. Allocated memory was 73.4MB in the beginning and 100.7MB in the end (delta: 27.3MB). Free memory was 46.7MB in the beginning and 65.5MB in the end (delta: -18.8MB). Peak memory consumption was 36.0MB. Max. memory is 16.1GB. [2023-11-23 21:22:56,256 INFO L158 Benchmark]: Boogie Procedure Inliner took 93.43ms. Allocated memory is still 100.7MB. Free memory was 65.5MB in the beginning and 62.2MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-23 21:22:56,256 INFO L158 Benchmark]: Boogie Preprocessor took 41.97ms. Allocated memory is still 100.7MB. Free memory was 62.2MB in the beginning and 60.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 21:22:56,256 INFO L158 Benchmark]: RCFGBuilder took 1020.41ms. Allocated memory is still 100.7MB. Free memory was 60.1MB in the beginning and 71.1MB in the end (delta: -11.0MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-23 21:22:56,257 INFO L158 Benchmark]: TraceAbstraction took 23983.27ms. Allocated memory was 100.7MB in the beginning and 121.6MB in the end (delta: 21.0MB). Free memory was 70.5MB in the beginning and 84.5MB in the end (delta: -14.0MB). Peak memory consumption was 52.2MB. Max. memory is 16.1GB. [2023-11-23 21:22:56,257 INFO L158 Benchmark]: Witness Printer took 4.46ms. Allocated memory is still 121.6MB. Free memory is still 83.5MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 21:22:56,259 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 73.4MB. Free memory is still 49.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1831.32ms. Allocated memory was 73.4MB in the beginning and 100.7MB in the end (delta: 27.3MB). Free memory was 46.7MB in the beginning and 65.5MB in the end (delta: -18.8MB). Peak memory consumption was 36.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 93.43ms. Allocated memory is still 100.7MB. Free memory was 65.5MB in the beginning and 62.2MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 41.97ms. Allocated memory is still 100.7MB. Free memory was 62.2MB in the beginning and 60.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1020.41ms. Allocated memory is still 100.7MB. Free memory was 60.1MB in the beginning and 71.1MB in the end (delta: -11.0MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 23983.27ms. Allocated memory was 100.7MB in the beginning and 121.6MB in the end (delta: 21.0MB). Free memory was 70.5MB in the beginning and 84.5MB in the end (delta: -14.0MB). Peak memory consumption was 52.2MB. Max. memory is 16.1GB. * Witness Printer took 4.46ms. Allocated memory is still 121.6MB. Free memory is still 83.5MB. 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~short105 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret102 could not be translated - 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~ret107 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret109 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short110 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem108 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem106 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem111 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~short115 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~mem118 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~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=0.000030464681913144886, x={7:0}, x={7:0}, y={3:0}, y={3:0}, z=0.000030464681913144886] [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=0.000004767629434354603, x={7:0}, x={7:0}, y={3:0}, y={3:0}, z=-0.000025697052478790283] [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=-0.0000000007421476766467094, x={7:0}, x={7:0}, y={3:0}, y={3:0}, z=-0.00000476837158203125] [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=NaN, x={7:0}, x={7:0}, y={3:0}, y={3:0}, z=NaN] [L853] COND FALSE !(i < n) VAL [\old(n)=4, i=4, max=158456325028528680000000000000, n=4, sum=NaN, x={7:0}, x={7:0}, y={3:0}, y={3:0}, z=NaN] [L858] i = 0 VAL [\old(n)=4, i=0, max=158456325028528680000000000000, n=4, sum=NaN, 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=NaN, 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=NaN, 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=NaN, 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=NaN, 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=NaN, x={7:0}, x={7:0}, y={3:0}, y={3:0}] [L872] RET softmax(x, y, 4) [L873] EXPR y[0] VAL [x={7:0}, y={3:0}] [L873] COND TRUE !(__builtin_isgreaterequal(y[0], 0.0f)) [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: 23.8s, OverallIterations: 7, TraceHistogramMax: 4, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 11.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 66 SdHoareTripleChecker+Valid, 10.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 66 mSDsluCounter, 326 SdHoareTripleChecker+Invalid, 10.5s 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: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 5.0s SatisfiabilityAnalysisTime, 1.7s 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 21:22:56,299 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d3715e-d169-4097-a634-888cd4b72687/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