./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/neural-networks/softmax_11_safe.c-amalgamation.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 527bcce2 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_672e04a7-a9e0-4b29-94e5-8f8a3e985543/bin/uautomizer-verify-bycVGegfSx/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_672e04a7-a9e0-4b29-94e5-8f8a3e985543/bin/uautomizer-verify-bycVGegfSx/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_672e04a7-a9e0-4b29-94e5-8f8a3e985543/bin/uautomizer-verify-bycVGegfSx/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_672e04a7-a9e0-4b29-94e5-8f8a3e985543/bin/uautomizer-verify-bycVGegfSx/config/AutomizerReach.xml -i ../../sv-benchmarks/c/neural-networks/softmax_11_safe.c-amalgamation.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_672e04a7-a9e0-4b29-94e5-8f8a3e985543/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_672e04a7-a9e0-4b29-94e5-8f8a3e985543/bin/uautomizer-verify-bycVGegfSx --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 06079ef6845cb4e1d4583c8af78d2f925187490fb0cd250b6d7743c55f841983 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 22:27:34,648 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 22:27:34,762 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_672e04a7-a9e0-4b29-94e5-8f8a3e985543/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-21 22:27:34,772 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 22:27:34,776 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 22:27:34,821 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 22:27:34,822 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 22:27:34,823 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 22:27:34,824 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-21 22:27:34,829 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-21 22:27:34,830 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 22:27:34,831 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 22:27:34,832 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 22:27:34,834 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 22:27:34,834 INFO L153 SettingsManager]: * Use SBE=true [2023-11-21 22:27:34,835 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 22:27:34,835 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-21 22:27:34,836 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 22:27:34,836 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 22:27:34,837 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 22:27:34,837 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 22:27:34,838 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-21 22:27:34,838 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 22:27:34,839 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-21 22:27:34,839 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 22:27:34,840 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 22:27:34,840 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 22:27:34,841 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 22:27:34,841 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 22:27:34,842 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 22:27:34,843 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 22:27:34,843 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:27:34,844 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 22:27:34,844 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 22:27:34,844 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-21 22:27:34,844 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-21 22:27:34,844 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 22:27:34,845 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 22:27:34,846 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-21 22:27:34,846 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-21 22:27:34,846 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-21 22:27:34,847 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 22:27:34,847 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_672e04a7-a9e0-4b29-94e5-8f8a3e985543/bin/uautomizer-verify-bycVGegfSx/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_672e04a7-a9e0-4b29-94e5-8f8a3e985543/bin/uautomizer-verify-bycVGegfSx Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 06079ef6845cb4e1d4583c8af78d2f925187490fb0cd250b6d7743c55f841983 [2023-11-21 22:27:35,206 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 22:27:35,241 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 22:27:35,244 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 22:27:35,246 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 22:27:35,246 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 22:27:35,248 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_672e04a7-a9e0-4b29-94e5-8f8a3e985543/bin/uautomizer-verify-bycVGegfSx/../../sv-benchmarks/c/neural-networks/softmax_11_safe.c-amalgamation.i [2023-11-21 22:27:38,435 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 22:27:38,780 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 22:27:38,781 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_672e04a7-a9e0-4b29-94e5-8f8a3e985543/sv-benchmarks/c/neural-networks/softmax_11_safe.c-amalgamation.i [2023-11-21 22:27:38,807 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_672e04a7-a9e0-4b29-94e5-8f8a3e985543/bin/uautomizer-verify-bycVGegfSx/data/df60c5aff/628a653aaec04b4aa4f474647223eb60/FLAG145af6f68 [2023-11-21 22:27:38,822 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_672e04a7-a9e0-4b29-94e5-8f8a3e985543/bin/uautomizer-verify-bycVGegfSx/data/df60c5aff/628a653aaec04b4aa4f474647223eb60 [2023-11-21 22:27:38,825 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 22:27:38,827 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 22:27:38,828 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 22:27:38,829 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 22:27:38,835 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 22:27:38,839 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:27:38" (1/1) ... [2023-11-21 22:27:38,840 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48b0bb2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:27:38, skipping insertion in model container [2023-11-21 22:27:38,840 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:27:38" (1/1) ... [2023-11-21 22:27:38,897 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 22:27:39,133 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-21 22:27:39,617 WARN L635 FunctionHandler]: implicit declaration of function __builtin_isnan [2023-11-21 22:27:39,618 WARN L635 FunctionHandler]: implicit declaration of function __builtin_isinf_sign [2023-11-21 22:27:39,620 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_672e04a7-a9e0-4b29-94e5-8f8a3e985543/sv-benchmarks/c/neural-networks/softmax_11_safe.c-amalgamation.i[63382,63395] [2023-11-21 22:27:39,625 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:27:39,634 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 22:27:39,654 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-21 22:27:39,711 WARN L635 FunctionHandler]: implicit declaration of function __builtin_isnan [2023-11-21 22:27:39,715 WARN L635 FunctionHandler]: implicit declaration of function __builtin_isinf_sign [2023-11-21 22:27:39,717 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_672e04a7-a9e0-4b29-94e5-8f8a3e985543/sv-benchmarks/c/neural-networks/softmax_11_safe.c-amalgamation.i[63382,63395] [2023-11-21 22:27:39,718 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:27:39,853 WARN L675 CHandler]: The function __builtin_isnan is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:27:39,854 WARN L675 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:27:39,854 WARN L675 CHandler]: The function __builtin_isinf_sign is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:27:39,862 INFO L206 MainTranslator]: Completed translation [2023-11-21 22:27:39,863 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:27:39 WrapperNode [2023-11-21 22:27:39,863 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 22:27:39,864 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 22:27:39,864 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 22:27:39,864 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 22:27:39,872 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:27:39" (1/1) ... [2023-11-21 22:27:39,897 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:27:39" (1/1) ... [2023-11-21 22:27:39,933 INFO L138 Inliner]: procedures = 564, calls = 39, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 114 [2023-11-21 22:27:39,934 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 22:27:39,935 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 22:27:39,935 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 22:27:39,935 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 22:27:39,947 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:27:39" (1/1) ... [2023-11-21 22:27:39,947 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:27:39" (1/1) ... [2023-11-21 22:27:39,952 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:27:39" (1/1) ... [2023-11-21 22:27:39,965 INFO L187 HeapSplitter]: Split 25 memory accesses to 4 slices as follows [2, 11, 7, 5] [2023-11-21 22:27:39,965 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:27:39" (1/1) ... [2023-11-21 22:27:39,966 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:27:39" (1/1) ... [2023-11-21 22:27:39,975 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:27:39" (1/1) ... [2023-11-21 22:27:39,979 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:27:39" (1/1) ... [2023-11-21 22:27:39,982 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:27:39" (1/1) ... [2023-11-21 22:27:39,984 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:27:39" (1/1) ... [2023-11-21 22:27:39,995 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 22:27:39,996 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 22:27:39,996 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 22:27:39,997 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 22:27:39,997 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:27:39" (1/1) ... [2023-11-21 22:27:40,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:27:40,030 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_672e04a7-a9e0-4b29-94e5-8f8a3e985543/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:27:40,046 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_672e04a7-a9e0-4b29-94e5-8f8a3e985543/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 22:27:40,069 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_672e04a7-a9e0-4b29-94e5-8f8a3e985543/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 22:27:40,091 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#0 [2023-11-21 22:27:40,091 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#1 [2023-11-21 22:27:40,092 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#2 [2023-11-21 22:27:40,092 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#3 [2023-11-21 22:27:40,092 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_isinf_sign [2023-11-21 22:27:40,092 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-21 22:27:40,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#0 [2023-11-21 22:27:40,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#1 [2023-11-21 22:27:40,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#2 [2023-11-21 22:27:40,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#3 [2023-11-21 22:27:40,092 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 22:27:40,093 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 22:27:40,093 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 22:27:40,093 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-21 22:27:40,093 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_isnan [2023-11-21 22:27:40,093 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-21 22:27:40,093 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-21 22:27:40,094 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-21 22:27:40,094 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-21 22:27:40,223 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 22:27:40,225 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 22:27:40,401 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 22:27:40,521 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 22:27:40,521 INFO L308 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-21 22:27:40,523 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:27:40 BoogieIcfgContainer [2023-11-21 22:27:40,523 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 22:27:40,526 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 22:27:40,526 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 22:27:40,530 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 22:27:40,530 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 10:27:38" (1/3) ... [2023-11-21 22:27:40,531 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b66a154 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:27:40, skipping insertion in model container [2023-11-21 22:27:40,531 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:27:39" (2/3) ... [2023-11-21 22:27:40,532 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b66a154 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:27:40, skipping insertion in model container [2023-11-21 22:27:40,532 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:27:40" (3/3) ... [2023-11-21 22:27:40,533 INFO L112 eAbstractionObserver]: Analyzing ICFG softmax_11_safe.c-amalgamation.i [2023-11-21 22:27:40,554 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 22:27:40,555 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-21 22:27:40,597 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 22:27:40,604 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=PETRI_NET, 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;@afab9f1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 22:27:40,604 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-21 22:27:40,609 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) [2023-11-21 22:27:40,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-21 22:27:40,616 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:27:40,616 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-21 22:27:40,617 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:27:40,623 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:27:40,624 INFO L85 PathProgramCache]: Analyzing trace with hash -713621891, now seen corresponding path program 1 times [2023-11-21 22:27:40,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:27:40,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064327328] [2023-11-21 22:27:40,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:27:40,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:27:40,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:27:41,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:27:41,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:27:41,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064327328] [2023-11-21 22:27:41,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064327328] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:27:41,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:27:41,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:27:41,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854031288] [2023-11-21 22:27:41,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:27:41,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:27:41,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:27:41,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:27:41,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:27:41,165 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) [2023-11-21 22:27:41,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:27:41,207 INFO L93 Difference]: Finished difference Result 17 states and 23 transitions. [2023-11-21 22:27:41,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:27:41,210 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 [2023-11-21 22:27:41,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:27:41,217 INFO L225 Difference]: With dead ends: 17 [2023-11-21 22:27:41,218 INFO L226 Difference]: Without dead ends: 8 [2023-11-21 22:27:41,220 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 [2023-11-21 22:27:41,224 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 0 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-21 22:27:41,225 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-21 22:27:41,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2023-11-21 22:27:41,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2023-11-21 22:27:41,257 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) [2023-11-21 22:27:41,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 10 transitions. [2023-11-21 22:27:41,259 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 10 transitions. Word has length 6 [2023-11-21 22:27:41,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:27:41,260 INFO L495 AbstractCegarLoop]: Abstraction has 8 states and 10 transitions. [2023-11-21 22:27:41,261 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) [2023-11-21 22:27:41,261 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 10 transitions. [2023-11-21 22:27:41,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-21 22:27:41,262 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:27:41,262 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:27:41,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-21 22:27:41,263 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:27:41,263 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:27:41,264 INFO L85 PathProgramCache]: Analyzing trace with hash -900262947, now seen corresponding path program 1 times [2023-11-21 22:27:41,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:27:41,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51220305] [2023-11-21 22:27:41,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:27:41,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:27:41,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:27:41,442 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-21 22:27:41,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:27:41,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51220305] [2023-11-21 22:27:41,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51220305] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:27:41,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:27:41,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 22:27:41,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71671842] [2023-11-21 22:27:41,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:27:41,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 22:27:41,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:27:41,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 22:27:41,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-21 22:27:41,451 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) [2023-11-21 22:27:41,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:27:41,495 INFO L93 Difference]: Finished difference Result 14 states and 18 transitions. [2023-11-21 22:27:41,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 22:27:41,496 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 [2023-11-21 22:27:41,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:27:41,497 INFO L225 Difference]: With dead ends: 14 [2023-11-21 22:27:41,497 INFO L226 Difference]: Without dead ends: 10 [2023-11-21 22:27:41,498 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 [2023-11-21 22:27:41,500 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 [2023-11-21 22:27:41,502 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] [2023-11-21 22:27:41,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2023-11-21 22:27:41,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2023-11-21 22:27:41,509 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) [2023-11-21 22:27:41,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 12 transitions. [2023-11-21 22:27:41,511 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 12 transitions. Word has length 7 [2023-11-21 22:27:41,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:27:41,511 INFO L495 AbstractCegarLoop]: Abstraction has 10 states and 12 transitions. [2023-11-21 22:27:41,512 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) [2023-11-21 22:27:41,512 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 12 transitions. [2023-11-21 22:27:41,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-21 22:27:41,513 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:27:41,513 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:27:41,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-21 22:27:41,514 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:27:41,515 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:27:41,515 INFO L85 PathProgramCache]: Analyzing trace with hash 2065420979, now seen corresponding path program 1 times [2023-11-21 22:27:41,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:27:41,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144882576] [2023-11-21 22:27:41,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:27:41,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:27:41,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:27:41,744 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-21 22:27:41,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:27:41,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144882576] [2023-11-21 22:27:41,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144882576] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 22:27:41,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1433953184] [2023-11-21 22:27:41,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:27:41,745 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:27:41,746 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_672e04a7-a9e0-4b29-94e5-8f8a3e985543/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:27:41,748 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_672e04a7-a9e0-4b29-94e5-8f8a3e985543/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:27:41,772 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_672e04a7-a9e0-4b29-94e5-8f8a3e985543/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-21 22:27:41,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:27:41,912 INFO L262 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-21 22:27:41,918 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:27:41,998 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-21 22:27:41,998 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:27:42,041 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-21 22:27:42,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1433953184] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 22:27:42,045 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-21 22:27:42,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2023-11-21 22:27:42,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172138378] [2023-11-21 22:27:42,049 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-21 22:27:42,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-21 22:27:42,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:27:42,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-21 22:27:42,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2023-11-21 22:27:42,052 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) [2023-11-21 22:27:42,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:27:42,100 INFO L93 Difference]: Finished difference Result 19 states and 24 transitions. [2023-11-21 22:27:42,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-21 22:27:42,101 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 [2023-11-21 22:27:42,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:27:42,103 INFO L225 Difference]: With dead ends: 19 [2023-11-21 22:27:42,103 INFO L226 Difference]: Without dead ends: 12 [2023-11-21 22:27:42,104 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2023-11-21 22:27:42,107 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 [2023-11-21 22:27:42,109 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] [2023-11-21 22:27:42,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2023-11-21 22:27:42,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2023-11-21 22:27:42,117 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) [2023-11-21 22:27:42,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2023-11-21 22:27:42,118 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 14 transitions. Word has length 9 [2023-11-21 22:27:42,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:27:42,119 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 14 transitions. [2023-11-21 22:27:42,119 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) [2023-11-21 22:27:42,119 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 14 transitions. [2023-11-21 22:27:42,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-21 22:27:42,120 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:27:42,120 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:27:42,144 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_672e04a7-a9e0-4b29-94e5-8f8a3e985543/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-21 22:27:42,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_672e04a7-a9e0-4b29-94e5-8f8a3e985543/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:27:42,340 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:27:42,341 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:27:42,341 INFO L85 PathProgramCache]: Analyzing trace with hash -1777752397, now seen corresponding path program 2 times [2023-11-21 22:27:42,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:27:42,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566155255] [2023-11-21 22:27:42,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:27:42,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:27:42,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:27:42,508 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-21 22:27:42,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:27:42,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566155255] [2023-11-21 22:27:42,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566155255] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 22:27:42,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2068852746] [2023-11-21 22:27:42,509 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-21 22:27:42,509 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:27:42,509 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_672e04a7-a9e0-4b29-94e5-8f8a3e985543/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:27:42,510 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_672e04a7-a9e0-4b29-94e5-8f8a3e985543/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:27:42,532 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_672e04a7-a9e0-4b29-94e5-8f8a3e985543/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-21 22:27:42,687 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-21 22:27:42,688 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-21 22:27:42,689 INFO L262 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-21 22:27:42,691 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:27:42,748 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-21 22:27:42,748 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:27:42,787 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-21 22:27:42,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2068852746] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 22:27:42,787 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-21 22:27:42,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2023-11-21 22:27:42,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410248280] [2023-11-21 22:27:42,788 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-21 22:27:42,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-21 22:27:42,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:27:42,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-21 22:27:42,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=64, Unknown=0, NotChecked=0, Total=110 [2023-11-21 22:27:42,790 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) [2023-11-21 22:27:42,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:27:42,870 INFO L93 Difference]: Finished difference Result 23 states and 31 transitions. [2023-11-21 22:27:42,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-21 22:27:42,871 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 [2023-11-21 22:27:42,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:27:42,872 INFO L225 Difference]: With dead ends: 23 [2023-11-21 22:27:42,872 INFO L226 Difference]: Without dead ends: 18 [2023-11-21 22:27:42,873 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=92, Unknown=0, NotChecked=0, Total=156 [2023-11-21 22:27:42,874 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 9 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-21 22:27:42,874 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 12 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-21 22:27:42,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2023-11-21 22:27:42,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2023-11-21 22:27:42,879 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) [2023-11-21 22:27:42,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2023-11-21 22:27:42,880 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 11 [2023-11-21 22:27:42,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:27:42,881 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2023-11-21 22:27:42,881 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) [2023-11-21 22:27:42,881 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2023-11-21 22:27:42,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-21 22:27:42,882 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:27:42,882 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1] [2023-11-21 22:27:42,908 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_672e04a7-a9e0-4b29-94e5-8f8a3e985543/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-21 22:27:43,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_672e04a7-a9e0-4b29-94e5-8f8a3e985543/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:27:43,103 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:27:43,104 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:27:43,104 INFO L85 PathProgramCache]: Analyzing trace with hash 680290269, now seen corresponding path program 3 times [2023-11-21 22:27:43,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:27:43,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174560100] [2023-11-21 22:27:43,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:27:43,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:27:43,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:27:43,189 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 22:27:43,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:27:43,295 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-21 22:27:43,295 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-21 22:27:43,296 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-21 22:27:43,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-21 22:27:43,302 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1, 1] [2023-11-21 22:27:43,306 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-21 22:27:43,338 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem91 could not be translated [2023-11-21 22:27:43,339 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem91 could not be translated [2023-11-21 22:27:43,339 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem91 could not be translated [2023-11-21 22:27:43,340 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem91 could not be translated [2023-11-21 22:27:43,340 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem91 could not be translated [2023-11-21 22:27:43,341 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem91 could not be translated [2023-11-21 22:27:43,341 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem91 could not be translated [2023-11-21 22:27:43,342 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem91 could not be translated [2023-11-21 22:27:43,342 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: Expected StepInfo for loop construct to contain Condition, but it did not [2023-11-21 22:27:43,343 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem91 could not be translated [2023-11-21 22:27:43,343 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem91 could not be translated [2023-11-21 22:27:43,345 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem91 could not be translated [2023-11-21 22:27:43,346 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem91 could not be translated [2023-11-21 22:27:43,346 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem91 could not be translated [2023-11-21 22:27:43,361 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 10:27:43 BoogieIcfgContainer [2023-11-21 22:27:43,362 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-21 22:27:43,362 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-21 22:27:43,362 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-21 22:27:43,363 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-21 22:27:43,363 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:27:40" (3/4) ... [2023-11-21 22:27:43,365 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-21 22:27:43,366 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-21 22:27:43,367 INFO L158 Benchmark]: Toolchain (without parser) took 4540.38ms. Allocated memory was 165.7MB in the beginning and 207.6MB in the end (delta: 41.9MB). Free memory was 122.5MB in the beginning and 138.2MB in the end (delta: -15.7MB). Peak memory consumption was 28.2MB. Max. memory is 16.1GB. [2023-11-21 22:27:43,368 INFO L158 Benchmark]: CDTParser took 0.36ms. Allocated memory is still 109.1MB. Free memory is still 57.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 22:27:43,368 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1034.77ms. Allocated memory is still 165.7MB. Free memory was 122.5MB in the beginning and 108.1MB in the end (delta: 14.4MB). Peak memory consumption was 41.7MB. Max. memory is 16.1GB. [2023-11-21 22:27:43,368 INFO L158 Benchmark]: Boogie Procedure Inliner took 70.34ms. Allocated memory is still 165.7MB. Free memory was 108.1MB in the beginning and 104.9MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-21 22:27:43,369 INFO L158 Benchmark]: Boogie Preprocessor took 60.88ms. Allocated memory is still 165.7MB. Free memory was 104.9MB in the beginning and 102.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-21 22:27:43,369 INFO L158 Benchmark]: RCFGBuilder took 527.14ms. Allocated memory is still 165.7MB. Free memory was 102.8MB in the beginning and 78.9MB in the end (delta: 23.9MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2023-11-21 22:27:43,369 INFO L158 Benchmark]: TraceAbstraction took 2835.46ms. Allocated memory was 165.7MB in the beginning and 207.6MB in the end (delta: 41.9MB). Free memory was 77.7MB in the beginning and 138.2MB in the end (delta: -60.5MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 22:27:43,370 INFO L158 Benchmark]: Witness Printer took 4.39ms. Allocated memory is still 207.6MB. Free memory is still 138.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 22:27:43,372 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36ms. Allocated memory is still 109.1MB. Free memory is still 57.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1034.77ms. Allocated memory is still 165.7MB. Free memory was 122.5MB in the beginning and 108.1MB in the end (delta: 14.4MB). Peak memory consumption was 41.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 70.34ms. Allocated memory is still 165.7MB. Free memory was 108.1MB in the beginning and 104.9MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 60.88ms. Allocated memory is still 165.7MB. Free memory was 104.9MB in the beginning and 102.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 527.14ms. Allocated memory is still 165.7MB. Free memory was 102.8MB in the beginning and 78.9MB in the end (delta: 23.9MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * TraceAbstraction took 2835.46ms. Allocated memory was 165.7MB in the beginning and 207.6MB in the end (delta: 41.9MB). Free memory was 77.7MB in the beginning and 138.2MB in the end (delta: -60.5MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 4.39ms. Allocated memory is still 207.6MB. Free memory is still 138.2MB. 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 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: 870]: 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 870, overapproximation of someBinaryArithmeticFLOAToperation at line 859. Possible FailurePath: [L863] float x[4], y[4]; [L864] x[0] = __VERIFIER_nondet_float() [L865] EXPR x[0] [L865] x[1] = x[0] + 1e-5f [L866] x[2] = 0.123456f [L867] x[3] = 0.654321f [L868] EXPR x[0] [L868] EXPR !__builtin_isnan (x[0]) && !__builtin_isinf_sign (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] 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=1929/15625, 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=1929/15625, 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 TRUE x[i] > max [L851] EXPR x[i] [L851] max = x[i] [L849] ++i VAL [\old(n)=4, i=3, max=1929/15625, 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=1929/15625, 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=1929/15625, 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=1929/15625, n=4, x={10:0}, x={10:0}, y={9:0}, y={9:0}, z=143] [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=1929/15625, n=4, x={10:0}, x={10:0}, y={9:0}, y={9:0}, z=145] [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=1929/15625, n=4, x={10:0}, x={10:0}, y={9:0}, y={9:0}, z=141] [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=1929/15625, n=4, x={10:0}, x={10:0}, y={9:0}, y={9:0}, z=147] [L853] COND FALSE !(i < n) [L858] i = 0 VAL [\old(n)=4, i=0, max=1929/15625, 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=1929/15625, 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=1929/15625, 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=1929/15625, 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=1929/15625, n=4, x={10:0}, x={10:0}, y={9:0}, y={9:0}] [L858] COND FALSE !(i < n) [L869] RET softmax(x, y, 4) [L870] EXPR y[0] [L870] EXPR y[1] [L870] COND TRUE !(__builtin_islessequal(y[0], y[1])) [L870] 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: 2.7s, OverallIterations: 5, TraceHistogramMax: 4, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 13 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 13 mSDsluCounter, 30 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 21 mSDsCounter, 21 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 77 IncrementalHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 21 mSolverCounterUnsat, 9 mSDtfsCounter, 77 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 54 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=4, InterpolantAutomatonStates: 19, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 70 NumberOfCodeBlocks, 70 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 65 ConstructedInterpolants, 0 QuantifiedInterpolants, 165 SizeOfPredicates, 2 NumberOfNonLiveVariables, 310 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 [2023-11-21 22:27:43,398 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_672e04a7-a9e0-4b29-94e5-8f8a3e985543/bin/uautomizer-verify-bycVGegfSx/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_672e04a7-a9e0-4b29-94e5-8f8a3e985543/bin/uautomizer-verify-bycVGegfSx/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_672e04a7-a9e0-4b29-94e5-8f8a3e985543/bin/uautomizer-verify-bycVGegfSx/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_672e04a7-a9e0-4b29-94e5-8f8a3e985543/bin/uautomizer-verify-bycVGegfSx/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_672e04a7-a9e0-4b29-94e5-8f8a3e985543/bin/uautomizer-verify-bycVGegfSx/config/AutomizerReach.xml -i ../../sv-benchmarks/c/neural-networks/softmax_11_safe.c-amalgamation.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_672e04a7-a9e0-4b29-94e5-8f8a3e985543/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_672e04a7-a9e0-4b29-94e5-8f8a3e985543/bin/uautomizer-verify-bycVGegfSx --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 06079ef6845cb4e1d4583c8af78d2f925187490fb0cd250b6d7743c55f841983 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 22:27:46,177 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 22:27:46,303 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_672e04a7-a9e0-4b29-94e5-8f8a3e985543/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-11-21 22:27:46,313 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 22:27:46,317 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 22:27:46,369 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 22:27:46,370 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 22:27:46,370 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 22:27:46,371 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-21 22:27:46,376 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-21 22:27:46,377 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 22:27:46,377 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 22:27:46,378 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 22:27:46,380 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 22:27:46,380 INFO L153 SettingsManager]: * Use SBE=true [2023-11-21 22:27:46,381 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 22:27:46,382 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-21 22:27:46,382 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 22:27:46,383 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 22:27:46,384 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 22:27:46,384 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-21 22:27:46,385 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 22:27:46,385 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-21 22:27:46,385 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-21 22:27:46,386 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-21 22:27:46,386 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-21 22:27:46,387 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 22:27:46,387 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 22:27:46,388 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 22:27:46,388 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 22:27:46,390 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 22:27:46,390 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 22:27:46,390 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 22:27:46,390 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:27:46,391 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 22:27:46,391 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 22:27:46,392 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-21 22:27:46,392 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-21 22:27:46,393 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-21 22:27:46,393 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 22:27:46,393 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-21 22:27:46,393 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-21 22:27:46,394 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-21 22:27:46,394 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 22:27:46,395 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-21 22:27:46,395 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_672e04a7-a9e0-4b29-94e5-8f8a3e985543/bin/uautomizer-verify-bycVGegfSx/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_672e04a7-a9e0-4b29-94e5-8f8a3e985543/bin/uautomizer-verify-bycVGegfSx Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 06079ef6845cb4e1d4583c8af78d2f925187490fb0cd250b6d7743c55f841983 [2023-11-21 22:27:46,805 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 22:27:46,835 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 22:27:46,838 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 22:27:46,839 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 22:27:46,840 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 22:27:46,843 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_672e04a7-a9e0-4b29-94e5-8f8a3e985543/bin/uautomizer-verify-bycVGegfSx/../../sv-benchmarks/c/neural-networks/softmax_11_safe.c-amalgamation.i [2023-11-21 22:27:50,076 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 22:27:50,460 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 22:27:50,461 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_672e04a7-a9e0-4b29-94e5-8f8a3e985543/sv-benchmarks/c/neural-networks/softmax_11_safe.c-amalgamation.i [2023-11-21 22:27:50,502 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_672e04a7-a9e0-4b29-94e5-8f8a3e985543/bin/uautomizer-verify-bycVGegfSx/data/4e481ec88/0287d5528a614bee8c8d3dd92a9e0781/FLAG8afcd3de7 [2023-11-21 22:27:50,516 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_672e04a7-a9e0-4b29-94e5-8f8a3e985543/bin/uautomizer-verify-bycVGegfSx/data/4e481ec88/0287d5528a614bee8c8d3dd92a9e0781 [2023-11-21 22:27:50,518 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 22:27:50,520 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 22:27:50,521 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 22:27:50,522 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 22:27:50,527 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 22:27:50,528 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:27:50" (1/1) ... [2023-11-21 22:27:50,530 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62df03fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:27:50, skipping insertion in model container [2023-11-21 22:27:50,530 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:27:50" (1/1) ... [2023-11-21 22:27:50,605 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 22:27:50,894 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-21 22:27:51,611 WARN L635 FunctionHandler]: implicit declaration of function __builtin_isnan [2023-11-21 22:27:51,612 WARN L635 FunctionHandler]: implicit declaration of function __builtin_isinf_sign [2023-11-21 22:27:51,615 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_672e04a7-a9e0-4b29-94e5-8f8a3e985543/sv-benchmarks/c/neural-networks/softmax_11_safe.c-amalgamation.i[63382,63395] [2023-11-21 22:27:51,620 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:27:51,635 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 22:27:51,657 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-21 22:27:51,716 WARN L635 FunctionHandler]: implicit declaration of function __builtin_isnan [2023-11-21 22:27:51,746 WARN L635 FunctionHandler]: implicit declaration of function __builtin_isinf_sign [2023-11-21 22:27:51,748 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_672e04a7-a9e0-4b29-94e5-8f8a3e985543/sv-benchmarks/c/neural-networks/softmax_11_safe.c-amalgamation.i[63382,63395] [2023-11-21 22:27:51,749 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:27:51,902 WARN L675 CHandler]: The function __builtin_isnan is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:27:51,902 WARN L675 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:27:51,902 WARN L675 CHandler]: The function __builtin_isinf_sign is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:27:51,911 INFO L206 MainTranslator]: Completed translation [2023-11-21 22:27:51,911 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:27:51 WrapperNode [2023-11-21 22:27:51,911 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 22:27:51,913 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 22:27:51,913 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 22:27:51,913 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 22:27:51,925 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:27:51" (1/1) ... [2023-11-21 22:27:51,966 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:27:51" (1/1) ... [2023-11-21 22:27:52,000 INFO L138 Inliner]: procedures = 565, calls = 39, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 113 [2023-11-21 22:27:52,001 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 22:27:52,005 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 22:27:52,005 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 22:27:52,005 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 22:27:52,018 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:27:51" (1/1) ... [2023-11-21 22:27:52,018 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:27:51" (1/1) ... [2023-11-21 22:27:52,023 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:27:51" (1/1) ... [2023-11-21 22:27:52,037 INFO L187 HeapSplitter]: Split 25 memory accesses to 4 slices as follows [2, 7, 11, 5] [2023-11-21 22:27:52,037 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:27:51" (1/1) ... [2023-11-21 22:27:52,038 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:27:51" (1/1) ... [2023-11-21 22:27:52,063 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:27:51" (1/1) ... [2023-11-21 22:27:52,068 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:27:51" (1/1) ... [2023-11-21 22:27:52,072 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:27:51" (1/1) ... [2023-11-21 22:27:52,090 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:27:51" (1/1) ... [2023-11-21 22:27:52,094 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 22:27:52,095 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 22:27:52,096 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 22:27:52,096 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 22:27:52,097 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:27:51" (1/1) ... [2023-11-21 22:27:52,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:27:52,133 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_672e04a7-a9e0-4b29-94e5-8f8a3e985543/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:27:52,155 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_672e04a7-a9e0-4b29-94e5-8f8a3e985543/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 22:27:52,178 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_672e04a7-a9e0-4b29-94e5-8f8a3e985543/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 22:27:52,212 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_isinf_sign [2023-11-21 22:27:52,212 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#0 [2023-11-21 22:27:52,212 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#1 [2023-11-21 22:27:52,212 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#2 [2023-11-21 22:27:52,213 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#3 [2023-11-21 22:27:52,213 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-21 22:27:52,214 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-11-21 22:27:52,214 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-11-21 22:27:52,215 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2023-11-21 22:27:52,215 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2023-11-21 22:27:52,215 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 22:27:52,215 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 22:27:52,216 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 22:27:52,217 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#0 [2023-11-21 22:27:52,217 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#1 [2023-11-21 22:27:52,217 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#2 [2023-11-21 22:27:52,217 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#3 [2023-11-21 22:27:52,220 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-21 22:27:52,220 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_isnan [2023-11-21 22:27:52,396 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 22:27:52,399 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 22:27:53,689 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 22:27:53,870 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 22:27:53,871 INFO L308 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-21 22:27:53,873 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:27:53 BoogieIcfgContainer [2023-11-21 22:27:53,873 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 22:27:53,890 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 22:27:53,893 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 22:27:53,897 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 22:27:53,898 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 10:27:50" (1/3) ... [2023-11-21 22:27:53,899 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e6f926e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:27:53, skipping insertion in model container [2023-11-21 22:27:53,899 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:27:51" (2/3) ... [2023-11-21 22:27:53,900 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e6f926e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:27:53, skipping insertion in model container [2023-11-21 22:27:53,902 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:27:53" (3/3) ... [2023-11-21 22:27:53,904 INFO L112 eAbstractionObserver]: Analyzing ICFG softmax_11_safe.c-amalgamation.i [2023-11-21 22:27:53,929 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 22:27:53,929 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-21 22:27:54,007 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 22:27:54,017 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=PETRI_NET, 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;@3caae405, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 22:27:54,017 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-21 22:27:54,023 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) [2023-11-21 22:27:54,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-21 22:27:54,031 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:27:54,034 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-21 22:27:54,035 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:27:54,044 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:27:54,044 INFO L85 PathProgramCache]: Analyzing trace with hash -713621891, now seen corresponding path program 1 times [2023-11-21 22:27:54,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 22:27:54,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [96164514] [2023-11-21 22:27:54,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:27:54,067 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 [2023-11-21 22:27:54,067 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_672e04a7-a9e0-4b29-94e5-8f8a3e985543/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 22:27:54,071 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_672e04a7-a9e0-4b29-94e5-8f8a3e985543/bin/uautomizer-verify-bycVGegfSx/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) [2023-11-21 22:27:54,084 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_672e04a7-a9e0-4b29-94e5-8f8a3e985543/bin/uautomizer-verify-bycVGegfSx/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 [2023-11-21 22:27:54,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:27:54,358 INFO L262 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-21 22:27:54,364 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:27:54,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:27:54,483 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:27:54,484 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 22:27:54,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [96164514] [2023-11-21 22:27:54,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [96164514] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:27:54,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:27:54,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:27:54,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813895178] [2023-11-21 22:27:54,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:27:54,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:27:54,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 22:27:54,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:27:54,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:27:54,551 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) [2023-11-21 22:27:55,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:27:55,247 INFO L93 Difference]: Finished difference Result 17 states and 23 transitions. [2023-11-21 22:27:55,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:27:55,251 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 [2023-11-21 22:27:55,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:27:55,261 INFO L225 Difference]: With dead ends: 17 [2023-11-21 22:27:55,261 INFO L226 Difference]: Without dead ends: 8 [2023-11-21 22:27:55,265 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:27:55,270 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 0 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s 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, 0.7s IncrementalHoareTripleChecker+Time [2023-11-21 22:27:55,271 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-21 22:27:55,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2023-11-21 22:27:55,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2023-11-21 22:27:55,309 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) [2023-11-21 22:27:55,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 10 transitions. [2023-11-21 22:27:55,311 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 10 transitions. Word has length 6 [2023-11-21 22:27:55,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:27:55,312 INFO L495 AbstractCegarLoop]: Abstraction has 8 states and 10 transitions. [2023-11-21 22:27:55,312 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) [2023-11-21 22:27:55,313 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 10 transitions. [2023-11-21 22:27:55,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-21 22:27:55,313 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:27:55,313 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:27:55,326 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_672e04a7-a9e0-4b29-94e5-8f8a3e985543/bin/uautomizer-verify-bycVGegfSx/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 [2023-11-21 22:27:55,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_672e04a7-a9e0-4b29-94e5-8f8a3e985543/bin/uautomizer-verify-bycVGegfSx/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 [2023-11-21 22:27:55,526 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:27:55,527 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:27:55,527 INFO L85 PathProgramCache]: Analyzing trace with hash -900262947, now seen corresponding path program 1 times [2023-11-21 22:27:55,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 22:27:55,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [917192040] [2023-11-21 22:27:55,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:27:55,530 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 [2023-11-21 22:27:55,530 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_672e04a7-a9e0-4b29-94e5-8f8a3e985543/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 22:27:55,532 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_672e04a7-a9e0-4b29-94e5-8f8a3e985543/bin/uautomizer-verify-bycVGegfSx/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) [2023-11-21 22:27:55,549 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_672e04a7-a9e0-4b29-94e5-8f8a3e985543/bin/uautomizer-verify-bycVGegfSx/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 [2023-11-21 22:27:55,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:27:55,747 INFO L262 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-21 22:27:55,749 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:27:55,843 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:27:55,843 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:27:55,934 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:27:55,935 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 22:27:55,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [917192040] [2023-11-21 22:27:55,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [917192040] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 22:27:55,935 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-21 22:27:55,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2023-11-21 22:27:55,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820653825] [2023-11-21 22:27:55,936 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-21 22:27:55,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 22:27:55,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 22:27:55,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 22:27:55,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-21 22:27:55,939 INFO L87 Difference]: Start difference. First operand 8 states and 10 transitions. Second operand has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 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) [2023-11-21 22:27:57,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:27:57,255 INFO L93 Difference]: Finished difference Result 15 states and 20 transitions. [2023-11-21 22:27:57,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-21 22:27:57,276 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 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) Word has length 7 [2023-11-21 22:27:57,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:27:57,277 INFO L225 Difference]: With dead ends: 15 [2023-11-21 22:27:57,277 INFO L226 Difference]: Without dead ends: 10 [2023-11-21 22:27:57,277 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-21 22:27:57,279 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 0 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-21 22:27:57,280 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-21 22:27:57,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2023-11-21 22:27:57,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2023-11-21 22:27:57,285 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) [2023-11-21 22:27:57,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 12 transitions. [2023-11-21 22:27:57,286 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 12 transitions. Word has length 7 [2023-11-21 22:27:57,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:27:57,287 INFO L495 AbstractCegarLoop]: Abstraction has 10 states and 12 transitions. [2023-11-21 22:27:57,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 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) [2023-11-21 22:27:57,288 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 12 transitions. [2023-11-21 22:27:57,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-21 22:27:57,289 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:27:57,289 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1] [2023-11-21 22:27:57,302 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_672e04a7-a9e0-4b29-94e5-8f8a3e985543/bin/uautomizer-verify-bycVGegfSx/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 [2023-11-21 22:27:57,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_672e04a7-a9e0-4b29-94e5-8f8a3e985543/bin/uautomizer-verify-bycVGegfSx/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 [2023-11-21 22:27:57,495 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:27:57,495 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:27:57,495 INFO L85 PathProgramCache]: Analyzing trace with hash -1364596771, now seen corresponding path program 2 times [2023-11-21 22:27:57,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 22:27:57,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [280990771] [2023-11-21 22:27:57,496 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-21 22:27:57,497 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 [2023-11-21 22:27:57,497 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_672e04a7-a9e0-4b29-94e5-8f8a3e985543/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 22:27:57,498 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_672e04a7-a9e0-4b29-94e5-8f8a3e985543/bin/uautomizer-verify-bycVGegfSx/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) [2023-11-21 22:27:57,545 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_672e04a7-a9e0-4b29-94e5-8f8a3e985543/bin/uautomizer-verify-bycVGegfSx/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 [2023-11-21 22:27:57,721 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-21 22:27:57,721 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-21 22:27:57,726 INFO L262 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-21 22:27:57,728 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:27:57,804 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-21 22:27:57,805 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:27:57,805 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 22:27:57,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [280990771] [2023-11-21 22:27:57,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [280990771] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:27:57,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:27:57,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 22:27:57,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450003166] [2023-11-21 22:27:57,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:27:57,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 22:27:57,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 22:27:57,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 22:27:57,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-21 22:27:57,809 INFO L87 Difference]: Start difference. First operand 10 states and 12 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) [2023-11-21 22:27:59,476 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-21 22:27:59,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:27:59,542 INFO L93 Difference]: Finished difference Result 16 states and 20 transitions. [2023-11-21 22:27:59,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 22:27:59,543 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 9 [2023-11-21 22:27:59,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:27:59,544 INFO L225 Difference]: With dead ends: 16 [2023-11-21 22:27:59,544 INFO L226 Difference]: Without dead ends: 12 [2023-11-21 22:27:59,545 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-21 22:27:59,547 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 4 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s 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, 1.7s IncrementalHoareTripleChecker+Time [2023-11-21 22:27:59,548 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 6 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-21 22:27:59,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2023-11-21 22:27:59,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2023-11-21 22:27:59,555 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) [2023-11-21 22:27:59,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2023-11-21 22:27:59,558 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 14 transitions. Word has length 9 [2023-11-21 22:27:59,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:27:59,558 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 14 transitions. [2023-11-21 22:27:59,560 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) [2023-11-21 22:27:59,560 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 14 transitions. [2023-11-21 22:27:59,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-21 22:27:59,561 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:27:59,561 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:27:59,572 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_672e04a7-a9e0-4b29-94e5-8f8a3e985543/bin/uautomizer-verify-bycVGegfSx/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 [2023-11-21 22:27:59,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_672e04a7-a9e0-4b29-94e5-8f8a3e985543/bin/uautomizer-verify-bycVGegfSx/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 [2023-11-21 22:27:59,773 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:27:59,773 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:27:59,773 INFO L85 PathProgramCache]: Analyzing trace with hash -1777752397, now seen corresponding path program 1 times [2023-11-21 22:27:59,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 22:27:59,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1763688246] [2023-11-21 22:27:59,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:27:59,775 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 [2023-11-21 22:27:59,775 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_672e04a7-a9e0-4b29-94e5-8f8a3e985543/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 22:27:59,777 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_672e04a7-a9e0-4b29-94e5-8f8a3e985543/bin/uautomizer-verify-bycVGegfSx/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) [2023-11-21 22:27:59,780 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_672e04a7-a9e0-4b29-94e5-8f8a3e985543/bin/uautomizer-verify-bycVGegfSx/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 [2023-11-21 22:28:00,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:28:00,345 INFO L262 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-21 22:28:00,347 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:28:00,476 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-21 22:28:00,477 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:28:00,608 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-21 22:28:00,608 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 22:28:00,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1763688246] [2023-11-21 22:28:00,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1763688246] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 22:28:00,609 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-21 22:28:00,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2023-11-21 22:28:00,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272826188] [2023-11-21 22:28:00,609 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-21 22:28:00,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-21 22:28:00,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 22:28:00,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-21 22:28:00,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-21 22:28:00,612 INFO L87 Difference]: Start difference. First operand 12 states and 14 transitions. Second operand has 8 states, 8 states have (on average 1.75) internal successors, (14), 7 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) [2023-11-21 22:28:05,010 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-21 22:28:05,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:28:05,044 INFO L93 Difference]: Finished difference Result 23 states and 31 transitions. [2023-11-21 22:28:05,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-21 22:28:05,045 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.75) internal successors, (14), 7 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) Word has length 11 [2023-11-21 22:28:05,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:28:05,046 INFO L225 Difference]: With dead ends: 23 [2023-11-21 22:28:05,046 INFO L226 Difference]: Without dead ends: 18 [2023-11-21 22:28:05,047 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2023-11-21 22:28:05,048 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 20 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2023-11-21 22:28:05,049 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 8 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2023-11-21 22:28:05,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2023-11-21 22:28:05,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2023-11-21 22:28:05,055 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) [2023-11-21 22:28:05,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2023-11-21 22:28:05,056 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 11 [2023-11-21 22:28:05,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:28:05,056 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2023-11-21 22:28:05,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.75) internal successors, (14), 7 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) [2023-11-21 22:28:05,057 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2023-11-21 22:28:05,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-21 22:28:05,058 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:28:05,058 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1] [2023-11-21 22:28:05,074 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_672e04a7-a9e0-4b29-94e5-8f8a3e985543/bin/uautomizer-verify-bycVGegfSx/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 [2023-11-21 22:28:05,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_672e04a7-a9e0-4b29-94e5-8f8a3e985543/bin/uautomizer-verify-bycVGegfSx/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 [2023-11-21 22:28:05,268 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:28:05,268 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:28:05,268 INFO L85 PathProgramCache]: Analyzing trace with hash 680290269, now seen corresponding path program 2 times [2023-11-21 22:28:05,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 22:28:05,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1255044293] [2023-11-21 22:28:05,269 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-21 22:28:05,270 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 [2023-11-21 22:28:05,270 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_672e04a7-a9e0-4b29-94e5-8f8a3e985543/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 22:28:05,271 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_672e04a7-a9e0-4b29-94e5-8f8a3e985543/bin/uautomizer-verify-bycVGegfSx/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) [2023-11-21 22:28:05,275 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_672e04a7-a9e0-4b29-94e5-8f8a3e985543/bin/uautomizer-verify-bycVGegfSx/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 (6)] Waiting until timeout for monitored process [2023-11-21 22:28:07,485 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-21 22:28:07,485 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2023-11-21 22:28:07,485 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 22:28:10,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:28:10,413 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2023-11-21 22:28:10,414 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-21 22:28:10,415 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-21 22:28:10,439 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_672e04a7-a9e0-4b29-94e5-8f8a3e985543/bin/uautomizer-verify-bycVGegfSx/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 (6)] Forceful destruction successful, exit code 0 [2023-11-21 22:28:10,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_672e04a7-a9e0-4b29-94e5-8f8a3e985543/bin/uautomizer-verify-bycVGegfSx/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 [2023-11-21 22:28:10,621 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1] [2023-11-21 22:28:10,627 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-21 22:28:10,670 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem91 could not be translated [2023-11-21 22:28:10,672 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem91 could not be translated [2023-11-21 22:28:10,673 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem91 could not be translated [2023-11-21 22:28:10,673 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem91 could not be translated [2023-11-21 22:28:10,675 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem91 could not be translated [2023-11-21 22:28:10,675 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem91 could not be translated [2023-11-21 22:28:10,676 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem91 could not be translated [2023-11-21 22:28:10,678 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem91 could not be translated [2023-11-21 22:28:10,678 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: Expected StepInfo for loop construct to contain Condition, but it did not [2023-11-21 22:28:10,679 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem91 could not be translated [2023-11-21 22:28:10,680 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem91 could not be translated [2023-11-21 22:28:10,680 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem91 could not be translated [2023-11-21 22:28:10,681 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem91 could not be translated [2023-11-21 22:28:10,682 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem91 could not be translated [2023-11-21 22:28:10,696 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 10:28:10 BoogieIcfgContainer [2023-11-21 22:28:10,696 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-21 22:28:10,697 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-21 22:28:10,697 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-21 22:28:10,697 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-21 22:28:10,697 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:27:53" (3/4) ... [2023-11-21 22:28:10,700 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-21 22:28:10,702 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-21 22:28:10,702 INFO L158 Benchmark]: Toolchain (without parser) took 20182.88ms. Allocated memory was 107.0MB in the beginning and 130.0MB in the end (delta: 23.1MB). Free memory was 80.7MB in the beginning and 87.1MB in the end (delta: -6.4MB). Peak memory consumption was 18.1MB. Max. memory is 16.1GB. [2023-11-21 22:28:10,703 INFO L158 Benchmark]: CDTParser took 0.36ms. Allocated memory is still 69.2MB. Free memory is still 45.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 22:28:10,703 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1390.40ms. Allocated memory is still 107.0MB. Free memory was 80.5MB in the beginning and 78.7MB in the end (delta: 1.8MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. [2023-11-21 22:28:10,704 INFO L158 Benchmark]: Boogie Procedure Inliner took 91.24ms. Allocated memory is still 107.0MB. Free memory was 78.7MB in the beginning and 75.6MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-21 22:28:10,704 INFO L158 Benchmark]: Boogie Preprocessor took 89.76ms. Allocated memory is still 107.0MB. Free memory was 75.6MB in the beginning and 72.9MB in the end (delta: 2.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-21 22:28:10,705 INFO L158 Benchmark]: RCFGBuilder took 1777.80ms. Allocated memory is still 107.0MB. Free memory was 72.9MB in the beginning and 44.5MB in the end (delta: 28.4MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2023-11-21 22:28:10,705 INFO L158 Benchmark]: TraceAbstraction took 16806.24ms. Allocated memory was 107.0MB in the beginning and 130.0MB in the end (delta: 23.1MB). Free memory was 79.1MB in the beginning and 88.0MB in the end (delta: -8.9MB). Peak memory consumption was 13.9MB. Max. memory is 16.1GB. [2023-11-21 22:28:10,706 INFO L158 Benchmark]: Witness Printer took 5.24ms. Allocated memory is still 130.0MB. Free memory was 88.0MB in the beginning and 87.1MB in the end (delta: 903.1kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 22:28:10,708 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36ms. Allocated memory is still 69.2MB. Free memory is still 45.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1390.40ms. Allocated memory is still 107.0MB. Free memory was 80.5MB in the beginning and 78.7MB in the end (delta: 1.8MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 91.24ms. Allocated memory is still 107.0MB. Free memory was 78.7MB in the beginning and 75.6MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 89.76ms. Allocated memory is still 107.0MB. Free memory was 75.6MB in the beginning and 72.9MB in the end (delta: 2.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1777.80ms. Allocated memory is still 107.0MB. Free memory was 72.9MB in the beginning and 44.5MB in the end (delta: 28.4MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * TraceAbstraction took 16806.24ms. Allocated memory was 107.0MB in the beginning and 130.0MB in the end (delta: 23.1MB). Free memory was 79.1MB in the beginning and 88.0MB in the end (delta: -8.9MB). Peak memory consumption was 13.9MB. Max. memory is 16.1GB. * Witness Printer took 5.24ms. Allocated memory is still 130.0MB. Free memory was 88.0MB in the beginning and 87.1MB in the end (delta: 903.1kB). 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 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: 870]: 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] EXPR x[0] [L865] x[1] = x[0] + 1e-5f [L866] x[2] = 0.123456f [L867] x[3] = 0.654321f [L868] EXPR x[0] [L868] EXPR !__builtin_isnan (x[0]) && !__builtin_isinf_sign (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] 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=1.9999901056289673, n=4, x={-2147483648:0}, x={-2147483648:0}, y={1073741824:0}, y={1073741824:0}] [L849] COND TRUE i < n [L850] EXPR x[i] [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={-2147483648:0}, x={-2147483648:0}, y={1073741824:0}, y={1073741824:0}] [L849] COND TRUE i < n [L850] EXPR x[i] [L850] COND FALSE !(x[i] > max) [L849] ++i VAL [\old(n)=4, i=3, max=2.0, n=4, x={-2147483648:0}, x={-2147483648:0}, y={1073741824:0}, y={1073741824:0}] [L849] COND TRUE i < n [L850] EXPR x[i] [L850] COND FALSE !(x[i] > max) [L849] ++i VAL [\old(n)=4, i=4, max=2.0, n=4, x={-2147483648:0}, x={-2147483648:0}, y={1073741824:0}, y={1073741824:0}] [L849] COND FALSE !(i < n) [L852] float sum = 0.0f; [L853] i = 0 VAL [\old(n)=4, i=0, max=2.0, n=4, sum=0.0, x={-2147483648:0}, x={-2147483648:0}, y={1073741824:0}, y={1073741824:0}] [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=2.0, n=4, sum=-0.0000000000033368863228133705, x={-2147483648:0}, x={-2147483648:0}, y={1073741824:0}, y={1073741824:0}, z=-0.0000000000033368863228133705] [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=2.0, n=4, sum=0.0, x={-2147483648:0}, x={-2147483648:0}, y={1073741824:0}, y={1073741824:0}, z=0.0000000000033368863228133705] [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=2.0, n=4, sum=-0.00000000000000000000000000000000000028200956712488596, x={-2147483648:0}, x={-2147483648:0}, y={1073741824:0}, y={1073741824:0}, z=-0.00000000000000000000000000000000000028200956712488596] [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=2.0, n=4, sum=-673439381371246900000000000000, x={-2147483648:0}, x={-2147483648:0}, y={1073741824:0}, y={1073741824:0}, z=-673439381371246900000000000000] [L853] COND FALSE !(i < n) [L858] i = 0 VAL [\old(n)=4, i=0, max=2.0, n=4, sum=-673439381371246900000000000000, x={-2147483648:0}, x={-2147483648:0}, y={1073741824:0}, y={1073741824:0}] [L858] COND TRUE i < n [L859] EXPR y[i] [L859] y[i] /= sum [L858] ++i VAL [\old(n)=4, i=1, max=2.0, n=4, sum=-673439381371246900000000000000, x={-2147483648:0}, x={-2147483648:0}, y={1073741824:0}, y={1073741824:0}] [L858] COND TRUE i < n [L859] EXPR y[i] [L859] y[i] /= sum [L858] ++i VAL [\old(n)=4, i=2, max=2.0, n=4, sum=-673439381371246900000000000000, x={-2147483648:0}, x={-2147483648:0}, y={1073741824:0}, y={1073741824:0}] [L858] COND TRUE i < n [L859] EXPR y[i] [L859] y[i] /= sum [L858] ++i VAL [\old(n)=4, i=3, max=2.0, n=4, sum=-673439381371246900000000000000, x={-2147483648:0}, x={-2147483648:0}, y={1073741824:0}, y={1073741824:0}] [L858] COND TRUE i < n [L859] EXPR y[i] [L859] y[i] /= sum [L858] ++i VAL [\old(n)=4, i=4, max=2.0, n=4, sum=-673439381371246900000000000000, x={-2147483648:0}, x={-2147483648:0}, y={1073741824:0}, y={1073741824:0}] [L858] COND FALSE !(i < n) [L869] RET softmax(x, y, 4) [L870] EXPR y[0] [L870] EXPR y[1] [L870] COND TRUE !(__builtin_islessequal(y[0], y[1])) [L870] reach_error() VAL [x={-2147483648:0}, y={1073741824:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 16.6s, OverallIterations: 5, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 8.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 24 SdHoareTripleChecker+Valid, 8.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 24 mSDsluCounter, 26 SdHoareTripleChecker+Invalid, 7.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 17 mSDsCounter, 17 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 79 IncrementalHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 17 mSolverCounterUnsat, 9 mSDtfsCounter, 79 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 47 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s 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, 2.9s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 50 NumberOfCodeBlocks, 47 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 45 ConstructedInterpolants, 0 QuantifiedInterpolants, 117 SizeOfPredicates, 4 NumberOfNonLiveVariables, 290 ConjunctsInSsa, 18 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 20/24 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 [2023-11-21 22:28:10,776 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_672e04a7-a9e0-4b29-94e5-8f8a3e985543/bin/uautomizer-verify-bycVGegfSx/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