./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/neural-networks/log_0_safe.c-amalgamation.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 30e01a73 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0fb2ecc-a862-4662-af92-c7e3215de4b9/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0fb2ecc-a862-4662-af92-c7e3215de4b9/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_a0fb2ecc-a862-4662-af92-c7e3215de4b9/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0fb2ecc-a862-4662-af92-c7e3215de4b9/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/neural-networks/log_0_safe.c-amalgamation.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0fb2ecc-a862-4662-af92-c7e3215de4b9/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_a0fb2ecc-a862-4662-af92-c7e3215de4b9/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 fc8d9f198c941dbfc5c9560047ba7ce9021782378982a3316378371e936db38e --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:24:18,478 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:24:18,548 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0fb2ecc-a862-4662-af92-c7e3215de4b9/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-23 21:24:18,554 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:24:18,554 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:24:18,581 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:24:18,581 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:24:18,582 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:24:18,583 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:24:18,584 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:24:18,585 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:24:18,585 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:24:18,586 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:24:18,587 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 21:24:18,587 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:24:18,588 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:24:18,589 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 21:24:18,589 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 21:24:18,590 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:24:18,590 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 21:24:18,591 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 21:24:18,592 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 21:24:18,593 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:24:18,593 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:24:18,594 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 21:24:18,594 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:24:18,594 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 21:24:18,595 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:24:18,595 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:24:18,596 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:24:18,596 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:24:18,597 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 21:24:18,597 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:24:18,598 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:24:18,598 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:24:18,598 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:24:18,599 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:24:18,599 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:24:18,599 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:24:18,600 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:24:18,600 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:24:18,601 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 21:24:18,601 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:24:18,601 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:24:18,601 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:24:18,602 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:24:18,602 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:24:18,602 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_a0fb2ecc-a862-4662-af92-c7e3215de4b9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0fb2ecc-a862-4662-af92-c7e3215de4b9/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fc8d9f198c941dbfc5c9560047ba7ce9021782378982a3316378371e936db38e [2023-11-23 21:24:18,925 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:24:18,955 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:24:18,958 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:24:18,960 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:24:18,961 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:24:18,962 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0fb2ecc-a862-4662-af92-c7e3215de4b9/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/neural-networks/log_0_safe.c-amalgamation.i [2023-11-23 21:24:22,073 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:24:22,443 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:24:22,443 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0fb2ecc-a862-4662-af92-c7e3215de4b9/sv-benchmarks/c/neural-networks/log_0_safe.c-amalgamation.i [2023-11-23 21:24:22,480 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0fb2ecc-a862-4662-af92-c7e3215de4b9/bin/utaipan-verify-mE87zJ7Ire/data/6c9cfc1e1/6bc6ad8d7c7442faa4fc80637cbd56e9/FLAG21c6a9608 [2023-11-23 21:24:22,507 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0fb2ecc-a862-4662-af92-c7e3215de4b9/bin/utaipan-verify-mE87zJ7Ire/data/6c9cfc1e1/6bc6ad8d7c7442faa4fc80637cbd56e9 [2023-11-23 21:24:22,515 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:24:22,516 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:24:22,522 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:24:22,522 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:24:22,529 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:24:22,553 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:24:22" (1/1) ... [2023-11-23 21:24:22,555 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b0a6764 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:24:22, skipping insertion in model container [2023-11-23 21:24:22,555 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:24:22" (1/1) ... [2023-11-23 21:24:22,630 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:24:22,908 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-23 21:24:23,444 WARN L635 FunctionHandler]: implicit declaration of function __builtin_isnan [2023-11-23 21:24:23,445 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_a0fb2ecc-a862-4662-af92-c7e3215de4b9/sv-benchmarks/c/neural-networks/log_0_safe.c-amalgamation.i[62989,63002] [2023-11-23 21:24:23,450 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:24:23,461 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:24:23,477 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-23 21:24:23,500 WARN L635 FunctionHandler]: implicit declaration of function __builtin_isnan [2023-11-23 21:24:23,501 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_a0fb2ecc-a862-4662-af92-c7e3215de4b9/sv-benchmarks/c/neural-networks/log_0_safe.c-amalgamation.i[62989,63002] [2023-11-23 21:24:23,501 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:24:23,647 WARN L675 CHandler]: The function __builtin_isnan is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:24:23,647 WARN L675 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:24:23,653 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:24:23,654 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:24:23 WrapperNode [2023-11-23 21:24:23,654 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:24:23,655 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:24:23,655 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:24:23,655 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:24:23,663 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:24:23" (1/1) ... [2023-11-23 21:24:23,684 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:24:23" (1/1) ... [2023-11-23 21:24:23,708 INFO L138 Inliner]: procedures = 559, calls = 15, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 30 [2023-11-23 21:24:23,708 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:24:23,709 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:24:23,709 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:24:23,710 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:24:23,718 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:24:23" (1/1) ... [2023-11-23 21:24:23,719 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:24:23" (1/1) ... [2023-11-23 21:24:23,721 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:24:23" (1/1) ... [2023-11-23 21:24:23,721 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:24:23" (1/1) ... [2023-11-23 21:24:23,725 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:24:23" (1/1) ... [2023-11-23 21:24:23,727 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:24:23" (1/1) ... [2023-11-23 21:24:23,728 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:24:23" (1/1) ... [2023-11-23 21:24:23,729 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:24:23" (1/1) ... [2023-11-23 21:24:23,731 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:24:23,732 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:24:23,733 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:24:23,733 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:24:23,734 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:24:23" (1/1) ... [2023-11-23 21:24:23,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:24:23,760 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0fb2ecc-a862-4662-af92-c7e3215de4b9/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:24:23,772 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0fb2ecc-a862-4662-af92-c7e3215de4b9/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:24:23,781 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0fb2ecc-a862-4662-af92-c7e3215de4b9/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:24:23,812 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:24:23,812 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:24:23,812 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:24:23,812 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_isnan [2023-11-23 21:24:23,813 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 21:24:23,926 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:24:23,928 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:24:24,010 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:24:24,060 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:24:24,061 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-23 21:24:24,062 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:24:24 BoogieIcfgContainer [2023-11-23 21:24:24,063 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:24:24,065 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:24:24,066 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:24:24,069 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:24:24,069 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:24:22" (1/3) ... [2023-11-23 21:24:24,070 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28c8f05e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:24:24, skipping insertion in model container [2023-11-23 21:24:24,070 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:24:23" (2/3) ... [2023-11-23 21:24:24,071 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28c8f05e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:24:24, skipping insertion in model container [2023-11-23 21:24:24,071 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:24:24" (3/3) ... [2023-11-23 21:24:24,072 INFO L112 eAbstractionObserver]: Analyzing ICFG log_0_safe.c-amalgamation.i [2023-11-23 21:24:24,095 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:24:24,095 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 21:24:24,146 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:24:24,153 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;@466cb909, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:24:24,153 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 21:24:24,170 INFO L276 IsEmpty]: Start isEmpty. Operand has 6 states, 4 states have (on average 1.5) internal successors, (6), 5 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 21:24:24,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-23 21:24:24,176 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:24:24,176 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-23 21:24:24,177 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:24:24,182 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:24:24,182 INFO L85 PathProgramCache]: Analyzing trace with hash 56123, now seen corresponding path program 1 times [2023-11-23 21:24:24,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:24:24,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549754599] [2023-11-23 21:24:24,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:24:24,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:24:24,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:24:24,362 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 21:24:24,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:24:24,408 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-23 21:24:24,410 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-23 21:24:24,412 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-23 21:24:24,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 21:24:24,421 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-23 21:24:24,425 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-23 21:24:24,450 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 09:24:24 BoogieIcfgContainer [2023-11-23 21:24:24,451 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-23 21:24:24,454 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-23 21:24:24,454 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-23 21:24:24,454 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-23 21:24:24,455 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:24:24" (3/4) ... [2023-11-23 21:24:24,458 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-23 21:24:24,459 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-23 21:24:24,460 INFO L158 Benchmark]: Toolchain (without parser) took 1943.78ms. Allocated memory was 136.3MB in the beginning and 184.5MB in the end (delta: 48.2MB). Free memory was 69.9MB in the beginning and 143.6MB in the end (delta: -73.7MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 21:24:24,461 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 136.3MB. Free memory is still 106.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 21:24:24,462 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1132.38ms. Allocated memory was 136.3MB in the beginning and 184.5MB in the end (delta: 48.2MB). Free memory was 69.8MB in the beginning and 97.5MB in the end (delta: -27.7MB). Peak memory consumption was 22.8MB. Max. memory is 16.1GB. [2023-11-23 21:24:24,463 INFO L158 Benchmark]: Boogie Procedure Inliner took 53.71ms. Allocated memory is still 184.5MB. Free memory was 97.1MB in the beginning and 94.4MB in the end (delta: 2.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-23 21:24:24,464 INFO L158 Benchmark]: Boogie Preprocessor took 22.41ms. Allocated memory is still 184.5MB. Free memory was 94.4MB in the beginning and 93.2MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 21:24:24,471 INFO L158 Benchmark]: RCFGBuilder took 330.35ms. Allocated memory is still 184.5MB. Free memory was 93.2MB in the beginning and 147.5MB in the end (delta: -54.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-23 21:24:24,473 INFO L158 Benchmark]: TraceAbstraction took 386.07ms. Allocated memory is still 184.5MB. Free memory was 146.5MB in the beginning and 143.6MB in the end (delta: 2.9MB). Peak memory consumption was 758.1kB. Max. memory is 16.1GB. [2023-11-23 21:24:24,474 INFO L158 Benchmark]: Witness Printer took 5.26ms. Allocated memory is still 184.5MB. Free memory was 143.6MB in the beginning and 143.6MB in the end (delta: 2.6kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 21:24:24,481 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 136.3MB. Free memory is still 106.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1132.38ms. Allocated memory was 136.3MB in the beginning and 184.5MB in the end (delta: 48.2MB). Free memory was 69.8MB in the beginning and 97.5MB in the end (delta: -27.7MB). Peak memory consumption was 22.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 53.71ms. Allocated memory is still 184.5MB. Free memory was 97.1MB in the beginning and 94.4MB in the end (delta: 2.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 22.41ms. Allocated memory is still 184.5MB. Free memory was 94.4MB in the beginning and 93.2MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 330.35ms. Allocated memory is still 184.5MB. Free memory was 93.2MB in the beginning and 147.5MB in the end (delta: -54.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 386.07ms. Allocated memory is still 184.5MB. Free memory was 146.5MB in the beginning and 143.6MB in the end (delta: 2.9MB). Peak memory consumption was 758.1kB. Max. memory is 16.1GB. * Witness Printer took 5.26ms. Allocated memory is still 184.5MB. Free memory was 143.6MB in the beginning and 143.6MB in the end (delta: 2.6kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 850]: 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 logf at line 849, overapproximation of someBinaryFLOATComparisonOperation at line 848. Possible FailurePath: [L847] float x = __VERIFIER_nondet_float(); [L848] COND FALSE !(!(__builtin_isless(x, 0.0f))) [L849] float y = logf(x); [L850] COND TRUE !(__builtin_isnan (y)) [L850] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 6 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-23 21:24:24,528 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0fb2ecc-a862-4662-af92-c7e3215de4b9/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-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0fb2ecc-a862-4662-af92-c7e3215de4b9/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0fb2ecc-a862-4662-af92-c7e3215de4b9/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_a0fb2ecc-a862-4662-af92-c7e3215de4b9/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0fb2ecc-a862-4662-af92-c7e3215de4b9/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/neural-networks/log_0_safe.c-amalgamation.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0fb2ecc-a862-4662-af92-c7e3215de4b9/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_a0fb2ecc-a862-4662-af92-c7e3215de4b9/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 fc8d9f198c941dbfc5c9560047ba7ce9021782378982a3316378371e936db38e --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:24:27,395 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:24:27,551 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0fb2ecc-a862-4662-af92-c7e3215de4b9/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2023-11-23 21:24:27,562 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:24:27,563 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:24:27,616 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:24:27,617 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:24:27,617 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:24:27,619 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:24:27,624 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:24:27,625 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:24:27,626 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:24:27,626 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:24:27,628 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:24:27,629 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:24:27,629 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:24:27,631 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:24:27,631 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:24:27,632 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 21:24:27,633 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 21:24:27,634 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:24:27,634 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:24:27,635 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:24:27,635 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:24:27,636 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-23 21:24:27,636 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-23 21:24:27,637 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-23 21:24:27,637 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 21:24:27,638 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:24:27,638 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:24:27,640 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:24:27,641 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 21:24:27,641 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:24:27,641 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:24:27,642 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:24:27,642 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:24:27,643 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:24:27,643 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:24:27,643 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-23 21:24:27,644 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-23 21:24:27,645 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:24:27,645 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:24:27,646 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:24:27,646 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:24:27,646 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_a0fb2ecc-a862-4662-af92-c7e3215de4b9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0fb2ecc-a862-4662-af92-c7e3215de4b9/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fc8d9f198c941dbfc5c9560047ba7ce9021782378982a3316378371e936db38e [2023-11-23 21:24:28,043 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:24:28,073 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:24:28,076 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:24:28,077 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:24:28,078 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:24:28,079 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0fb2ecc-a862-4662-af92-c7e3215de4b9/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/neural-networks/log_0_safe.c-amalgamation.i [2023-11-23 21:24:31,457 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:24:31,864 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:24:31,865 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0fb2ecc-a862-4662-af92-c7e3215de4b9/sv-benchmarks/c/neural-networks/log_0_safe.c-amalgamation.i [2023-11-23 21:24:31,890 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0fb2ecc-a862-4662-af92-c7e3215de4b9/bin/utaipan-verify-mE87zJ7Ire/data/d6be42d25/a66debca60d44dc8b813d37e0550ac6b/FLAG0c46c9d6c [2023-11-23 21:24:31,903 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0fb2ecc-a862-4662-af92-c7e3215de4b9/bin/utaipan-verify-mE87zJ7Ire/data/d6be42d25/a66debca60d44dc8b813d37e0550ac6b [2023-11-23 21:24:31,906 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:24:31,915 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:24:31,916 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:24:31,916 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:24:31,921 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:24:31,921 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:24:31" (1/1) ... [2023-11-23 21:24:31,922 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3754fb10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:24:31, skipping insertion in model container [2023-11-23 21:24:31,923 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:24:31" (1/1) ... [2023-11-23 21:24:31,989 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:24:32,314 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-23 21:24:33,275 WARN L635 FunctionHandler]: implicit declaration of function __builtin_isnan [2023-11-23 21:24:33,276 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_a0fb2ecc-a862-4662-af92-c7e3215de4b9/sv-benchmarks/c/neural-networks/log_0_safe.c-amalgamation.i[62989,63002] [2023-11-23 21:24:33,281 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:24:33,295 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:24:33,329 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-23 21:24:33,362 WARN L635 FunctionHandler]: implicit declaration of function __builtin_isnan [2023-11-23 21:24:33,363 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_a0fb2ecc-a862-4662-af92-c7e3215de4b9/sv-benchmarks/c/neural-networks/log_0_safe.c-amalgamation.i[62989,63002] [2023-11-23 21:24:33,364 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:24:33,600 WARN L675 CHandler]: The function __builtin_isnan is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:24:33,600 WARN L675 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:24:33,608 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:24:33,609 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:24:33 WrapperNode [2023-11-23 21:24:33,609 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:24:33,611 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:24:33,611 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:24:33,611 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:24:33,619 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:24:33" (1/1) ... [2023-11-23 21:24:33,670 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:24:33" (1/1) ... [2023-11-23 21:24:33,711 INFO L138 Inliner]: procedures = 560, calls = 15, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 30 [2023-11-23 21:24:33,712 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:24:33,713 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:24:33,714 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:24:33,714 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:24:33,723 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:24:33" (1/1) ... [2023-11-23 21:24:33,723 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:24:33" (1/1) ... [2023-11-23 21:24:33,738 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:24:33" (1/1) ... [2023-11-23 21:24:33,739 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:24:33" (1/1) ... [2023-11-23 21:24:33,744 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:24:33" (1/1) ... [2023-11-23 21:24:33,752 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:24:33" (1/1) ... [2023-11-23 21:24:33,760 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:24:33" (1/1) ... [2023-11-23 21:24:33,765 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:24:33" (1/1) ... [2023-11-23 21:24:33,768 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:24:33,770 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:24:33,770 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:24:33,770 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:24:33,771 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:24:33" (1/1) ... [2023-11-23 21:24:33,777 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:24:33,796 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0fb2ecc-a862-4662-af92-c7e3215de4b9/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:24:33,809 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0fb2ecc-a862-4662-af92-c7e3215de4b9/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:24:33,825 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0fb2ecc-a862-4662-af92-c7e3215de4b9/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:24:33,859 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-23 21:24:33,860 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:24:33,860 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:24:33,860 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:24:33,860 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_isnan [2023-11-23 21:24:33,992 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:24:33,995 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:24:34,122 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:24:34,151 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:24:34,151 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-23 21:24:34,152 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:24:34 BoogieIcfgContainer [2023-11-23 21:24:34,152 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:24:34,155 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:24:34,155 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:24:34,159 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:24:34,159 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:24:31" (1/3) ... [2023-11-23 21:24:34,160 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f121eda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:24:34, skipping insertion in model container [2023-11-23 21:24:34,160 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:24:33" (2/3) ... [2023-11-23 21:24:34,160 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f121eda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:24:34, skipping insertion in model container [2023-11-23 21:24:34,161 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:24:34" (3/3) ... [2023-11-23 21:24:34,162 INFO L112 eAbstractionObserver]: Analyzing ICFG log_0_safe.c-amalgamation.i [2023-11-23 21:24:34,182 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:24:34,182 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 21:24:34,234 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:24:34,242 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;@1f9e4c11, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:24:34,242 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 21:24:34,246 INFO L276 IsEmpty]: Start isEmpty. Operand has 8 states, 6 states have (on average 1.5) internal successors, (9), 7 states have internal predecessors, (9), 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 21:24:34,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-23 21:24:34,253 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:24:34,253 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-23 21:24:34,254 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:24:34,260 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:24:34,260 INFO L85 PathProgramCache]: Analyzing trace with hash 49104602, now seen corresponding path program 1 times [2023-11-23 21:24:34,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:24:34,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1527536164] [2023-11-23 21:24:34,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:24:34,275 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 21:24:34,275 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0fb2ecc-a862-4662-af92-c7e3215de4b9/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:24:34,279 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0fb2ecc-a862-4662-af92-c7e3215de4b9/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 21:24:34,332 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0fb2ecc-a862-4662-af92-c7e3215de4b9/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 21:24:34,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:24:34,383 INFO L262 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-23 21:24:34,387 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:24:34,406 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 21:24:34,407 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:24:34,408 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:24:34,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1527536164] [2023-11-23 21:24:34,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1527536164] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:24:34,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:24:34,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:24:34,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516829151] [2023-11-23 21:24:34,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:24:34,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-23 21:24:34,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:24:34,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-23 21:24:34,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-23 21:24:34,449 INFO L87 Difference]: Start difference. First operand has 8 states, 6 states have (on average 1.5) internal successors, (9), 7 states have internal predecessors, (9), 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 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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 21:24:34,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:24:34,469 INFO L93 Difference]: Finished difference Result 14 states and 15 transitions. [2023-11-23 21:24:34,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-23 21:24:34,472 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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 5 [2023-11-23 21:24:34,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:24:34,480 INFO L225 Difference]: With dead ends: 14 [2023-11-23 21:24:34,480 INFO L226 Difference]: Without dead ends: 6 [2023-11-23 21:24:34,483 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 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 21:24:34,487 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:24:34,488 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 5 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 21:24:34,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states. [2023-11-23 21:24:34,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2023-11-23 21:24:34,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 5 states have (on average 1.0) internal successors, (5), 5 states have internal predecessors, (5), 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 21:24:34,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 5 transitions. [2023-11-23 21:24:34,517 INFO L78 Accepts]: Start accepts. Automaton has 6 states and 5 transitions. Word has length 5 [2023-11-23 21:24:34,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:24:34,518 INFO L495 AbstractCegarLoop]: Abstraction has 6 states and 5 transitions. [2023-11-23 21:24:34,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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 21:24:34,519 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 5 transitions. [2023-11-23 21:24:34,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-23 21:24:34,519 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:24:34,520 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-23 21:24:34,533 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0fb2ecc-a862-4662-af92-c7e3215de4b9/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)] Forceful destruction successful, exit code 0 [2023-11-23 21:24:34,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0fb2ecc-a862-4662-af92-c7e3215de4b9/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 21:24:34,728 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:24:34,729 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:24:34,730 INFO L85 PathProgramCache]: Analyzing trace with hash 49164184, now seen corresponding path program 1 times [2023-11-23 21:24:34,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:24:34,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1737733422] [2023-11-23 21:24:34,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:24:34,733 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 21:24:34,733 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0fb2ecc-a862-4662-af92-c7e3215de4b9/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:24:34,735 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0fb2ecc-a862-4662-af92-c7e3215de4b9/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 21:24:34,783 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0fb2ecc-a862-4662-af92-c7e3215de4b9/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 21:24:34,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:24:34,803 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 21:24:34,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:24:34,826 INFO L130 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2023-11-23 21:24:34,826 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-23 21:24:34,828 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-23 21:24:34,838 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0fb2ecc-a862-4662-af92-c7e3215de4b9/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 21:24:35,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0fb2ecc-a862-4662-af92-c7e3215de4b9/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 21:24:35,037 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-23 21:24:35,041 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-23 21:24:35,062 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 09:24:35 BoogieIcfgContainer [2023-11-23 21:24:35,062 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-23 21:24:35,063 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-23 21:24:35,063 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-23 21:24:35,063 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-23 21:24:35,064 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:24:34" (3/4) ... [2023-11-23 21:24:35,066 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-23 21:24:35,067 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-23 21:24:35,068 INFO L158 Benchmark]: Toolchain (without parser) took 3153.03ms. Allocated memory is still 90.2MB. Free memory was 64.3MB in the beginning and 47.8MB in the end (delta: 16.5MB). Peak memory consumption was 17.7MB. Max. memory is 16.1GB. [2023-11-23 21:24:35,068 INFO L158 Benchmark]: CDTParser took 1.37ms. Allocated memory is still 62.9MB. Free memory is still 39.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 21:24:35,069 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1693.69ms. Allocated memory is still 90.2MB. Free memory was 64.3MB in the beginning and 56.1MB in the end (delta: 8.2MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. [2023-11-23 21:24:35,069 INFO L158 Benchmark]: Boogie Procedure Inliner took 101.41ms. Allocated memory is still 90.2MB. Free memory was 56.1MB in the beginning and 53.1MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 21:24:35,070 INFO L158 Benchmark]: Boogie Preprocessor took 55.42ms. Allocated memory is still 90.2MB. Free memory was 53.1MB in the beginning and 51.9MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 21:24:35,071 INFO L158 Benchmark]: RCFGBuilder took 382.81ms. Allocated memory is still 90.2MB. Free memory was 51.4MB in the beginning and 41.0MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-23 21:24:35,071 INFO L158 Benchmark]: TraceAbstraction took 907.48ms. Allocated memory is still 90.2MB. Free memory was 40.5MB in the beginning and 48.3MB in the end (delta: -7.8MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 21:24:35,072 INFO L158 Benchmark]: Witness Printer took 4.10ms. Allocated memory is still 90.2MB. Free memory was 48.3MB in the beginning and 47.8MB in the end (delta: 516.5kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 21:24:35,075 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.37ms. Allocated memory is still 62.9MB. Free memory is still 39.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1693.69ms. Allocated memory is still 90.2MB. Free memory was 64.3MB in the beginning and 56.1MB in the end (delta: 8.2MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 101.41ms. Allocated memory is still 90.2MB. Free memory was 56.1MB in the beginning and 53.1MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 55.42ms. Allocated memory is still 90.2MB. Free memory was 53.1MB in the beginning and 51.9MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 382.81ms. Allocated memory is still 90.2MB. Free memory was 51.4MB in the beginning and 41.0MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 907.48ms. Allocated memory is still 90.2MB. Free memory was 40.5MB in the beginning and 48.3MB in the end (delta: -7.8MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 4.10ms. Allocated memory is still 90.2MB. Free memory was 48.3MB in the beginning and 47.8MB in the end (delta: 516.5kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 850]: 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 logf at line 849. Possible FailurePath: [L847] float x = __VERIFIER_nondet_float(); [L848] COND FALSE !(!(__builtin_isless(x, 0.0f))) VAL [x=-2.0] [L849] float y = logf(x); [L850] COND TRUE !(__builtin_isnan (y)) [L850] reach_error() VAL [x=-2.0, y=0.000000000000000000000000000000000000000000001401298464324817] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 8 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.8s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 5 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2 IncrementalHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 5 mSDtfsCounter, 2 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8occurred in iteration=0, InterpolantAutomatonStates: 2, 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 10 NumberOfCodeBlocks, 10 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 4 ConstructedInterpolants, 0 QuantifiedInterpolants, 4 SizeOfPredicates, 0 NumberOfNonLiveVariables, 22 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-23 21:24:35,117 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0fb2ecc-a862-4662-af92-c7e3215de4b9/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