/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml --sifa.abstract.domain EqDomain -i ../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--usb--cx82310_eth.ko-entry_point.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 13:27:26,076 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 13:27:26,079 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 13:27:26,117 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-01 13:27:26,118 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-01 13:27:26,120 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-01 13:27:26,123 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-01 13:27:26,125 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-01 13:27:26,126 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-01 13:27:26,131 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-01 13:27:26,132 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-01 13:27:26,134 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-01 13:27:26,134 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-01 13:27:26,136 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-01 13:27:26,137 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-01 13:27:26,138 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-01 13:27:26,139 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-01 13:27:26,139 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-01 13:27:26,141 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-01 13:27:26,146 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-01 13:27:26,147 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-01 13:27:26,148 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-01 13:27:26,148 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-01 13:27:26,150 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-01 13:27:26,157 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-01 13:27:26,158 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-01 13:27:26,158 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-01 13:27:26,160 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-01 13:27:26,160 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-01 13:27:26,161 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-01 13:27:26,161 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-01 13:27:26,161 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-01 13:27:26,163 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-01 13:27:26,163 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-01 13:27:26,164 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-01 13:27:26,164 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-01 13:27:26,165 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-01 13:27:26,165 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-01 13:27:26,165 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 13:27:26,166 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 13:27:26,166 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 13:27:26,168 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf [2023-04-01 13:27:26,195 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 13:27:26,196 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 13:27:26,196 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 13:27:26,196 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 13:27:26,197 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 13:27:26,197 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 13:27:26,197 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-01 13:27:26,198 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-01 13:27:26,198 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-01 13:27:26,198 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-01 13:27:26,199 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-01 13:27:26,199 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-01 13:27:26,199 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-01 13:27:26,199 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-01 13:27:26,199 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-01 13:27:26,199 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-01 13:27:26,200 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-01 13:27:26,200 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-01 13:27:26,200 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 13:27:26,201 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 13:27:26,201 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 13:27:26,201 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 13:27:26,201 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 13:27:26,201 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 13:27:26,201 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 13:27:26,201 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 13:27:26,202 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 13:27:26,202 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 13:27:26,202 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 13:27:26,202 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 13:27:26,202 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 13:27:26,202 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 13:27:26,203 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 13:27:26,203 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 13:27:26,203 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-01 13:27:26,203 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 13:27:26,203 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 13:27:26,203 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-01 13:27:26,204 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 13:27:26,204 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 13:27:26,204 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-01 13:27:26,204 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> EqDomain [2023-04-01 13:27:26,426 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 13:27:26,445 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 13:27:26,447 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 13:27:26,448 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 13:27:26,449 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 13:27:26,450 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--usb--cx82310_eth.ko-entry_point.cil.out.i [2023-04-01 13:27:27,696 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 13:27:28,178 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 13:27:28,179 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--usb--cx82310_eth.ko-entry_point.cil.out.i [2023-04-01 13:27:28,204 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cb66dbf59/993b1bd32395435b95cb7d4fce29dcd1/FLAGb9d91557b [2023-04-01 13:27:28,216 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cb66dbf59/993b1bd32395435b95cb7d4fce29dcd1 [2023-04-01 13:27:28,218 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 13:27:28,219 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 13:27:28,220 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 13:27:28,220 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 13:27:28,226 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 13:27:28,227 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 01:27:28" (1/1) ... [2023-04-01 13:27:28,228 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64a0f42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 01:27:28, skipping insertion in model container [2023-04-01 13:27:28,228 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 01:27:28" (1/1) ... [2023-04-01 13:27:28,235 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 13:27:28,336 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 13:27:29,027 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--usb--cx82310_eth.ko-entry_point.cil.out.i[159401,159414] [2023-04-01 13:27:29,349 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 13:27:29,377 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 13:27:29,480 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--usb--cx82310_eth.ko-entry_point.cil.out.i[159401,159414] [2023-04-01 13:27:29,557 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 13:27:29,590 INFO L208 MainTranslator]: Completed translation [2023-04-01 13:27:29,591 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 01:27:29 WrapperNode [2023-04-01 13:27:29,592 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 13:27:29,592 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 13:27:29,593 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 13:27:29,593 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 13:27:29,603 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 01:27:29" (1/1) ... [2023-04-01 13:27:29,604 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 01:27:29" (1/1) ... [2023-04-01 13:27:29,643 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 01:27:29" (1/1) ... [2023-04-01 13:27:29,643 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 01:27:29" (1/1) ... [2023-04-01 13:27:29,721 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 01:27:29" (1/1) ... [2023-04-01 13:27:29,739 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 01:27:29" (1/1) ... [2023-04-01 13:27:29,746 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 01:27:29" (1/1) ... [2023-04-01 13:27:29,768 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 01:27:29" (1/1) ... [2023-04-01 13:27:29,779 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 13:27:29,780 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 13:27:29,780 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 13:27:29,780 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 13:27:29,788 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 01:27:29" (1/1) ... [2023-04-01 13:27:29,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 13:27:29,805 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 13:27:29,822 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-04-01 13:27:29,853 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-04-01 13:27:29,865 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 13:27:29,865 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 13:27:29,865 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 13:27:29,865 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2023-04-01 13:27:29,866 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2023-04-01 13:27:29,866 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2023-04-01 13:27:29,866 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_headroom [2023-04-01 13:27:29,866 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-01 13:27:29,866 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-04-01 13:27:29,866 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2023-04-01 13:27:29,866 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2023-04-01 13:27:29,866 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2023-04-01 13:27:29,866 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2023-04-01 13:27:29,866 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-04-01 13:27:29,866 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-04-01 13:27:29,866 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_trap [2023-04-01 13:27:29,867 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2023-04-01 13:27:29,867 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2023-04-01 13:27:29,867 INFO L138 BoogieDeclarations]: Found implementation of procedure cx82310_cmd [2023-04-01 13:27:29,867 INFO L138 BoogieDeclarations]: Found implementation of procedure cx82310_bind [2023-04-01 13:27:29,867 INFO L138 BoogieDeclarations]: Found implementation of procedure cx82310_unbind [2023-04-01 13:27:29,867 INFO L138 BoogieDeclarations]: Found implementation of procedure cx82310_rx_fixup [2023-04-01 13:27:29,867 INFO L138 BoogieDeclarations]: Found implementation of procedure cx82310_tx_fixup [2023-04-01 13:27:29,867 INFO L138 BoogieDeclarations]: Found implementation of procedure cx82310_driver_init [2023-04-01 13:27:29,867 INFO L138 BoogieDeclarations]: Found implementation of procedure cx82310_driver_exit [2023-04-01 13:27:29,867 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_driver_info_2 [2023-04-01 13:27:29,867 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_driver_1 [2023-04-01 13:27:29,867 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 13:27:29,867 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_consume_skb_5 [2023-04-01 13:27:29,868 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_6 [2023-04-01 13:27:29,868 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_7 [2023-04-01 13:27:29,868 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_8 [2023-04-01 13:27:29,868 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_11 [2023-04-01 13:27:29,868 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_alloc_skb_12 [2023-04-01 13:27:29,868 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_register_driver_14 [2023-04-01 13:27:29,868 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_deregister_15 [2023-04-01 13:27:29,868 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_init [2023-04-01 13:27:29,869 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_add [2023-04-01 13:27:29,869 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2023-04-01 13:27:29,869 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_contains [2023-04-01 13:27:29,869 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_is_empty [2023-04-01 13:27:29,869 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2023-04-01 13:27:29,869 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_err_ptr [2023-04-01 13:27:29,869 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_ptr_err [2023-04-01 13:27:29,869 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err_or_null [2023-04-01 13:27:29,870 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2023-04-01 13:27:29,870 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2023-04-01 13:27:29,870 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free [2023-04-01 13:27:29,870 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free_int [2023-04-01 13:27:29,871 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_alloc_skb [2023-04-01 13:27:29,871 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_netdev_alloc_skb [2023-04-01 13:27:29,871 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_current [2023-04-01 13:27:29,871 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2023-04-01 13:27:29,871 INFO L138 BoogieDeclarations]: Found implementation of procedure __dev_kfree_skb_any [2023-04-01 13:27:29,871 INFO L138 BoogieDeclarations]: Found implementation of procedure _dev_info [2023-04-01 13:27:29,871 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_err [2023-04-01 13:27:29,872 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_reset_resume_1 [2023-04-01 13:27:29,872 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_copy_expand [2023-04-01 13:27:29,872 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_pull [2023-04-01 13:27:29,873 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_push [2023-04-01 13:27:29,873 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2023-04-01 13:27:29,873 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_trim [2023-04-01 13:27:29,873 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_bulk_msg [2023-04-01 13:27:29,873 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_deregister [2023-04-01 13:27:29,873 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_register_driver [2023-04-01 13:27:29,873 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_string [2023-04-01 13:27:29,874 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_disconnect [2023-04-01 13:27:29,874 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_get_endpoints [2023-04-01 13:27:29,874 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_probe [2023-04-01 13:27:29,874 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_resume [2023-04-01 13:27:29,874 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_skb_return [2023-04-01 13:27:29,874 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_suspend [2023-04-01 13:27:29,874 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-04-01 13:27:29,874 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-04-01 13:27:29,874 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2023-04-01 13:27:29,874 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2023-04-01 13:27:29,874 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 13:27:29,875 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 13:27:29,875 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2023-04-01 13:27:29,875 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2023-04-01 13:27:29,876 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 13:27:29,876 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 13:27:29,876 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-04-01 13:27:29,876 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2023-04-01 13:27:29,877 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2023-04-01 13:27:29,877 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-04-01 13:27:29,877 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-04-01 13:27:29,877 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2023-04-01 13:27:29,877 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2023-04-01 13:27:29,877 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2023-04-01 13:27:29,877 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2023-04-01 13:27:29,877 INFO L130 BoogieDeclarations]: Found specification of procedure dev_err [2023-04-01 13:27:29,877 INFO L130 BoogieDeclarations]: Found specification of procedure _dev_info [2023-04-01 13:27:29,878 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_6 [2023-04-01 13:27:29,878 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_7 [2023-04-01 13:27:29,878 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_8 [2023-04-01 13:27:29,878 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_11 [2023-04-01 13:27:29,878 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_consume_skb_5 [2023-04-01 13:27:29,878 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_alloc_skb_12 [2023-04-01 13:27:29,878 INFO L130 BoogieDeclarations]: Found specification of procedure skb_copy_expand [2023-04-01 13:27:29,878 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2023-04-01 13:27:29,878 INFO L130 BoogieDeclarations]: Found specification of procedure skb_push [2023-04-01 13:27:29,878 INFO L130 BoogieDeclarations]: Found specification of procedure skb_pull [2023-04-01 13:27:29,878 INFO L130 BoogieDeclarations]: Found specification of procedure skb_headroom [2023-04-01 13:27:29,878 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-04-01 13:27:29,879 INFO L130 BoogieDeclarations]: Found specification of procedure skb_trim [2023-04-01 13:27:29,879 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2023-04-01 13:27:29,879 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free [2023-04-01 13:27:29,879 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2023-04-01 13:27:29,879 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2023-04-01 13:27:29,879 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-01 13:27:29,879 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2023-04-01 13:27:29,880 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-01 13:27:29,880 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-04-01 13:27:29,880 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2023-04-01 13:27:29,880 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2023-04-01 13:27:29,880 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2023-04-01 13:27:29,880 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2023-04-01 13:27:29,880 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-04-01 13:27:29,881 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_trap [2023-04-01 13:27:29,881 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_driver_info_2 [2023-04-01 13:27:29,882 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_driver_1 [2023-04-01 13:27:29,883 INFO L130 BoogieDeclarations]: Found specification of procedure __dev_kfree_skb_any [2023-04-01 13:27:29,883 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2023-04-01 13:27:29,888 INFO L130 BoogieDeclarations]: Found specification of procedure usb_register_driver [2023-04-01 13:27:29,888 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_register_driver_14 [2023-04-01 13:27:29,888 INFO L130 BoogieDeclarations]: Found specification of procedure usb_deregister [2023-04-01 13:27:29,889 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_deregister_15 [2023-04-01 13:27:29,889 INFO L130 BoogieDeclarations]: Found specification of procedure usb_bulk_msg [2023-04-01 13:27:29,889 INFO L130 BoogieDeclarations]: Found specification of procedure usb_string [2023-04-01 13:27:29,889 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2023-04-01 13:27:29,889 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 13:27:29,889 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2023-04-01 13:27:29,889 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_probe [2023-04-01 13:27:29,889 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_suspend [2023-04-01 13:27:29,889 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_resume [2023-04-01 13:27:29,889 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_disconnect [2023-04-01 13:27:29,889 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_get_endpoints [2023-04-01 13:27:29,890 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_skb_return [2023-04-01 13:27:29,890 INFO L130 BoogieDeclarations]: Found specification of procedure cx82310_cmd [2023-04-01 13:27:29,890 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-04-01 13:27:29,890 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2023-04-01 13:27:29,890 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 13:27:29,890 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 13:27:29,890 INFO L130 BoogieDeclarations]: Found specification of procedure cx82310_bind [2023-04-01 13:27:29,890 INFO L130 BoogieDeclarations]: Found specification of procedure cx82310_unbind [2023-04-01 13:27:29,890 INFO L130 BoogieDeclarations]: Found specification of procedure cx82310_rx_fixup [2023-04-01 13:27:29,890 INFO L130 BoogieDeclarations]: Found specification of procedure cx82310_tx_fixup [2023-04-01 13:27:29,890 INFO L130 BoogieDeclarations]: Found specification of procedure cx82310_driver_init [2023-04-01 13:27:29,890 INFO L130 BoogieDeclarations]: Found specification of procedure cx82310_driver_exit [2023-04-01 13:27:29,890 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_reset_resume_1 [2023-04-01 13:27:29,890 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2023-04-01 13:27:29,891 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2023-04-01 13:27:29,891 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 13:27:29,891 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-04-01 13:27:29,891 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-04-01 13:27:29,891 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_init [2023-04-01 13:27:29,891 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_add [2023-04-01 13:27:29,891 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2023-04-01 13:27:29,891 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_contains [2023-04-01 13:27:29,891 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_is_empty [2023-04-01 13:27:29,891 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2023-04-01 13:27:29,891 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_err_ptr [2023-04-01 13:27:29,891 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_ptr_err [2023-04-01 13:27:29,891 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err_or_null [2023-04-01 13:27:29,892 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free_int [2023-04-01 13:27:29,892 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_netdev_alloc_skb [2023-04-01 13:27:29,892 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_alloc_skb [2023-04-01 13:27:29,892 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_current [2023-04-01 13:27:29,892 INFO L130 BoogieDeclarations]: Found specification of procedure free [2023-04-01 13:27:29,892 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 13:27:29,892 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 13:27:29,892 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-04-01 13:27:29,892 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-04-01 13:27:29,892 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 13:27:29,892 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-04-01 13:27:29,892 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-04-01 13:27:29,892 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-04-01 13:27:30,293 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 13:27:30,299 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 13:27:30,376 INFO L771 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-04-01 13:27:32,293 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 13:27:32,425 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 13:27:32,425 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-04-01 13:27:32,429 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 01:27:32 BoogieIcfgContainer [2023-04-01 13:27:32,429 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 13:27:32,431 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 13:27:32,431 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 13:27:32,433 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 13:27:32,434 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 01:27:28" (1/3) ... [2023-04-01 13:27:32,434 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51368192 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 01:27:32, skipping insertion in model container [2023-04-01 13:27:32,434 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 01:27:29" (2/3) ... [2023-04-01 13:27:32,435 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51368192 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 01:27:32, skipping insertion in model container [2023-04-01 13:27:32,435 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 01:27:32" (3/3) ... [2023-04-01 13:27:32,436 INFO L112 eAbstractionObserver]: Analyzing ICFG 205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--usb--cx82310_eth.ko-entry_point.cil.out.i [2023-04-01 13:27:32,452 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 13:27:32,452 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 13:27:32,501 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 13:27:32,507 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@31576ecf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-01 13:27:32,507 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 13:27:32,513 INFO L276 IsEmpty]: Start isEmpty. Operand has 391 states, 237 states have (on average 1.3248945147679325) internal successors, (314), 245 states have internal predecessors, (314), 96 states have call successors, (96), 54 states have call predecessors, (96), 53 states have return successors, (92), 92 states have call predecessors, (92), 92 states have call successors, (92) [2023-04-01 13:27:32,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-04-01 13:27:32,529 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 13:27:32,530 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 13:27:32,531 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 13:27:32,536 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 13:27:32,537 INFO L85 PathProgramCache]: Analyzing trace with hash 1303480945, now seen corresponding path program 1 times [2023-04-01 13:27:32,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 13:27:32,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592817551] [2023-04-01 13:27:32,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 13:27:32,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 13:27:32,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 13:27:33,155 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-04-01 13:27:33,155 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 13:27:33,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592817551] [2023-04-01 13:27:33,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592817551] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 13:27:33,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 13:27:33,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 13:27:33,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078939669] [2023-04-01 13:27:33,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 13:27:33,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 13:27:33,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 13:27:33,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 13:27:33,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 13:27:33,201 INFO L87 Difference]: Start difference. First operand has 391 states, 237 states have (on average 1.3248945147679325) internal successors, (314), 245 states have internal predecessors, (314), 96 states have call successors, (96), 54 states have call predecessors, (96), 53 states have return successors, (92), 92 states have call predecessors, (92), 92 states have call successors, (92) Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-04-01 13:27:34,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 13:27:34,727 INFO L93 Difference]: Finished difference Result 1058 states and 1403 transitions. [2023-04-01 13:27:34,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 13:27:34,730 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 53 [2023-04-01 13:27:34,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 13:27:34,744 INFO L225 Difference]: With dead ends: 1058 [2023-04-01 13:27:34,744 INFO L226 Difference]: Without dead ends: 677 [2023-04-01 13:27:34,750 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 [2023-04-01 13:27:34,753 INFO L413 NwaCegarLoop]: 452 mSDtfsCounter, 425 mSDsluCounter, 419 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 425 SdHoareTripleChecker+Valid, 871 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-04-01 13:27:34,754 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [425 Valid, 871 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-04-01 13:27:34,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 677 states. [2023-04-01 13:27:34,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 677 to 677. [2023-04-01 13:27:34,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 677 states, 427 states have (on average 1.31615925058548) internal successors, (562), 429 states have internal predecessors, (562), 162 states have call successors, (162), 90 states have call predecessors, (162), 87 states have return successors, (159), 159 states have call predecessors, (159), 159 states have call successors, (159) [2023-04-01 13:27:34,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 677 states to 677 states and 883 transitions. [2023-04-01 13:27:34,842 INFO L78 Accepts]: Start accepts. Automaton has 677 states and 883 transitions. Word has length 53 [2023-04-01 13:27:34,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 13:27:34,842 INFO L495 AbstractCegarLoop]: Abstraction has 677 states and 883 transitions. [2023-04-01 13:27:34,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-04-01 13:27:34,843 INFO L276 IsEmpty]: Start isEmpty. Operand 677 states and 883 transitions. [2023-04-01 13:27:34,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-04-01 13:27:34,847 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 13:27:34,847 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 13:27:34,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 13:27:34,848 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 13:27:34,848 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 13:27:34,848 INFO L85 PathProgramCache]: Analyzing trace with hash -1303051793, now seen corresponding path program 1 times [2023-04-01 13:27:34,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 13:27:34,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258766830] [2023-04-01 13:27:34,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 13:27:34,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 13:27:34,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 13:27:35,216 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-04-01 13:27:35,216 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 13:27:35,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258766830] [2023-04-01 13:27:35,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258766830] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 13:27:35,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 13:27:35,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-01 13:27:35,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674160524] [2023-04-01 13:27:35,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 13:27:35,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-01 13:27:35,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 13:27:35,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-01 13:27:35,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-01 13:27:35,220 INFO L87 Difference]: Start difference. First operand 677 states and 883 transitions. Second operand has 6 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) [2023-04-01 13:27:37,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 13:27:37,797 INFO L93 Difference]: Finished difference Result 1338 states and 1757 transitions. [2023-04-01 13:27:37,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-01 13:27:37,798 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) Word has length 67 [2023-04-01 13:27:37,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 13:27:37,811 INFO L225 Difference]: With dead ends: 1338 [2023-04-01 13:27:37,811 INFO L226 Difference]: Without dead ends: 1317 [2023-04-01 13:27:37,813 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-04-01 13:27:37,817 INFO L413 NwaCegarLoop]: 467 mSDtfsCounter, 454 mSDsluCounter, 1626 mSDsCounter, 0 mSdLazyCounter, 456 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 455 SdHoareTripleChecker+Valid, 2093 SdHoareTripleChecker+Invalid, 458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-04-01 13:27:37,817 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [455 Valid, 2093 Invalid, 458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 456 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-04-01 13:27:37,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1317 states. [2023-04-01 13:27:37,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1317 to 1317. [2023-04-01 13:27:37,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1317 states, 837 states have (on average 1.3178016726403823) internal successors, (1103), 843 states have internal predecessors, (1103), 311 states have call successors, (311), 169 states have call predecessors, (311), 168 states have return successors, (320), 308 states have call predecessors, (320), 308 states have call successors, (320) [2023-04-01 13:27:37,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1317 states to 1317 states and 1734 transitions. [2023-04-01 13:27:37,916 INFO L78 Accepts]: Start accepts. Automaton has 1317 states and 1734 transitions. Word has length 67 [2023-04-01 13:27:37,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 13:27:37,916 INFO L495 AbstractCegarLoop]: Abstraction has 1317 states and 1734 transitions. [2023-04-01 13:27:37,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) [2023-04-01 13:27:37,917 INFO L276 IsEmpty]: Start isEmpty. Operand 1317 states and 1734 transitions. [2023-04-01 13:27:37,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-04-01 13:27:37,926 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 13:27:37,926 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 13:27:37,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-01 13:27:37,926 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 13:27:37,928 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 13:27:37,928 INFO L85 PathProgramCache]: Analyzing trace with hash 1341957130, now seen corresponding path program 1 times [2023-04-01 13:27:37,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 13:27:37,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805676359] [2023-04-01 13:27:37,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 13:27:37,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 13:27:37,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 13:27:38,130 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-04-01 13:27:38,130 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 13:27:38,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805676359] [2023-04-01 13:27:38,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805676359] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 13:27:38,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 13:27:38,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 13:27:38,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900138311] [2023-04-01 13:27:38,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 13:27:38,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 13:27:38,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 13:27:38,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 13:27:38,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 13:27:38,132 INFO L87 Difference]: Start difference. First operand 1317 states and 1734 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-04-01 13:27:38,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 13:27:38,848 INFO L93 Difference]: Finished difference Result 2911 states and 3827 transitions. [2023-04-01 13:27:38,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 13:27:38,848 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 108 [2023-04-01 13:27:38,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 13:27:38,857 INFO L225 Difference]: With dead ends: 2911 [2023-04-01 13:27:38,858 INFO L226 Difference]: Without dead ends: 1614 [2023-04-01 13:27:38,862 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 [2023-04-01 13:27:38,863 INFO L413 NwaCegarLoop]: 451 mSDtfsCounter, 141 mSDsluCounter, 392 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 843 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-01 13:27:38,864 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 843 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-01 13:27:38,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1614 states. [2023-04-01 13:27:38,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1614 to 1593. [2023-04-01 13:27:38,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1593 states, 1036 states have (on average 1.333011583011583) internal successors, (1381), 1042 states have internal predecessors, (1381), 351 states have call successors, (351), 206 states have call predecessors, (351), 205 states have return successors, (360), 348 states have call predecessors, (360), 348 states have call successors, (360) [2023-04-01 13:27:38,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1593 states to 1593 states and 2092 transitions. [2023-04-01 13:27:38,983 INFO L78 Accepts]: Start accepts. Automaton has 1593 states and 2092 transitions. Word has length 108 [2023-04-01 13:27:38,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 13:27:38,984 INFO L495 AbstractCegarLoop]: Abstraction has 1593 states and 2092 transitions. [2023-04-01 13:27:38,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-04-01 13:27:38,986 INFO L276 IsEmpty]: Start isEmpty. Operand 1593 states and 2092 transitions. [2023-04-01 13:27:38,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-04-01 13:27:38,995 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 13:27:38,995 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 13:27:38,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-01 13:27:38,996 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 13:27:39,003 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 13:27:39,003 INFO L85 PathProgramCache]: Analyzing trace with hash 2007573229, now seen corresponding path program 1 times [2023-04-01 13:27:39,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 13:27:39,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74316285] [2023-04-01 13:27:39,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 13:27:39,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 13:27:39,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 13:27:39,232 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2023-04-01 13:27:39,232 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 13:27:39,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74316285] [2023-04-01 13:27:39,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74316285] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 13:27:39,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 13:27:39,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 13:27:39,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531832416] [2023-04-01 13:27:39,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 13:27:39,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 13:27:39,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 13:27:39,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 13:27:39,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 13:27:39,235 INFO L87 Difference]: Start difference. First operand 1593 states and 2092 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2023-04-01 13:27:40,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 13:27:40,736 INFO L93 Difference]: Finished difference Result 3991 states and 5229 transitions. [2023-04-01 13:27:40,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 13:27:40,737 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) Word has length 146 [2023-04-01 13:27:40,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 13:27:40,750 INFO L225 Difference]: With dead ends: 3991 [2023-04-01 13:27:40,750 INFO L226 Difference]: Without dead ends: 2430 [2023-04-01 13:27:40,758 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 [2023-04-01 13:27:40,762 INFO L413 NwaCegarLoop]: 574 mSDtfsCounter, 426 mSDsluCounter, 275 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 426 SdHoareTripleChecker+Valid, 849 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-04-01 13:27:40,763 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [426 Valid, 849 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-04-01 13:27:40,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2430 states. [2023-04-01 13:27:40,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2430 to 2409. [2023-04-01 13:27:40,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2409 states, 1580 states have (on average 1.3221518987341772) internal successors, (2089), 1592 states have internal predecessors, (2089), 509 states have call successors, (509), 318 states have call predecessors, (509), 319 states have return successors, (526), 506 states have call predecessors, (526), 506 states have call successors, (526) [2023-04-01 13:27:40,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2409 states to 2409 states and 3124 transitions. [2023-04-01 13:27:40,913 INFO L78 Accepts]: Start accepts. Automaton has 2409 states and 3124 transitions. Word has length 146 [2023-04-01 13:27:40,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 13:27:40,914 INFO L495 AbstractCegarLoop]: Abstraction has 2409 states and 3124 transitions. [2023-04-01 13:27:40,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2023-04-01 13:27:40,914 INFO L276 IsEmpty]: Start isEmpty. Operand 2409 states and 3124 transitions. [2023-04-01 13:27:40,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-04-01 13:27:40,919 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 13:27:40,919 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 13:27:40,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-01 13:27:40,919 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 13:27:40,920 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 13:27:40,920 INFO L85 PathProgramCache]: Analyzing trace with hash 699086258, now seen corresponding path program 1 times [2023-04-01 13:27:40,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 13:27:40,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952345795] [2023-04-01 13:27:40,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 13:27:40,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 13:27:40,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 13:27:41,340 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-04-01 13:27:41,341 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 13:27:41,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952345795] [2023-04-01 13:27:41,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952345795] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 13:27:41,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 13:27:41,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-01 13:27:41,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381470170] [2023-04-01 13:27:41,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 13:27:41,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 13:27:41,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 13:27:41,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 13:27:41,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-01 13:27:41,343 INFO L87 Difference]: Start difference. First operand 2409 states and 3124 transitions. Second operand has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (29), 2 states have call predecessors, (29), 3 states have return successors, (26), 3 states have call predecessors, (26), 2 states have call successors, (26) [2023-04-01 13:27:42,404 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-01 13:27:43,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 13:27:43,840 INFO L93 Difference]: Finished difference Result 4840 states and 6333 transitions. [2023-04-01 13:27:43,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 13:27:43,840 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (29), 2 states have call predecessors, (29), 3 states have return successors, (26), 3 states have call predecessors, (26), 2 states have call successors, (26) Word has length 161 [2023-04-01 13:27:43,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 13:27:43,853 INFO L225 Difference]: With dead ends: 4840 [2023-04-01 13:27:43,853 INFO L226 Difference]: Without dead ends: 2463 [2023-04-01 13:27:43,860 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-01 13:27:43,861 INFO L413 NwaCegarLoop]: 429 mSDtfsCounter, 2 mSDsluCounter, 1275 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1704 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-04-01 13:27:43,861 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1704 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-04-01 13:27:43,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2463 states. [2023-04-01 13:27:43,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2463 to 2449. [2023-04-01 13:27:43,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2449 states, 1608 states have (on average 1.316542288557214) internal successors, (2117), 1624 states have internal predecessors, (2117), 509 states have call successors, (509), 318 states have call predecessors, (509), 331 states have return successors, (548), 514 states have call predecessors, (548), 506 states have call successors, (548) [2023-04-01 13:27:43,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2449 states to 2449 states and 3174 transitions. [2023-04-01 13:27:43,963 INFO L78 Accepts]: Start accepts. Automaton has 2449 states and 3174 transitions. Word has length 161 [2023-04-01 13:27:43,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 13:27:43,963 INFO L495 AbstractCegarLoop]: Abstraction has 2449 states and 3174 transitions. [2023-04-01 13:27:43,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (29), 2 states have call predecessors, (29), 3 states have return successors, (26), 3 states have call predecessors, (26), 2 states have call successors, (26) [2023-04-01 13:27:43,964 INFO L276 IsEmpty]: Start isEmpty. Operand 2449 states and 3174 transitions. [2023-04-01 13:27:43,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2023-04-01 13:27:43,969 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 13:27:43,969 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 13:27:43,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-01 13:27:43,969 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 13:27:43,970 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 13:27:43,970 INFO L85 PathProgramCache]: Analyzing trace with hash 242914003, now seen corresponding path program 1 times [2023-04-01 13:27:43,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 13:27:43,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220455686] [2023-04-01 13:27:43,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 13:27:43,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 13:27:44,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 13:27:44,469 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-04-01 13:27:44,471 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 13:27:44,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220455686] [2023-04-01 13:27:44,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220455686] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 13:27:44,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 13:27:44,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-04-01 13:27:44,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687216739] [2023-04-01 13:27:44,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 13:27:44,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-01 13:27:44,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 13:27:44,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-01 13:27:44,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2023-04-01 13:27:44,475 INFO L87 Difference]: Start difference. First operand 2449 states and 3174 transitions. Second operand has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 9 states have internal predecessors, (93), 5 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (28), 7 states have call predecessors, (28), 5 states have call successors, (28) [2023-04-01 13:27:48,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 13:27:48,798 INFO L93 Difference]: Finished difference Result 4928 states and 6435 transitions. [2023-04-01 13:27:48,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-04-01 13:27:48,799 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 9 states have internal predecessors, (93), 5 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (28), 7 states have call predecessors, (28), 5 states have call successors, (28) Word has length 169 [2023-04-01 13:27:48,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 13:27:48,817 INFO L225 Difference]: With dead ends: 4928 [2023-04-01 13:27:48,817 INFO L226 Difference]: Without dead ends: 2511 [2023-04-01 13:27:48,825 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2023-04-01 13:27:48,826 INFO L413 NwaCegarLoop]: 435 mSDtfsCounter, 14 mSDsluCounter, 3849 mSDsCounter, 0 mSdLazyCounter, 633 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 4284 SdHoareTripleChecker+Invalid, 636 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 633 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2023-04-01 13:27:48,826 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 4284 Invalid, 636 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 633 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2023-04-01 13:27:48,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2511 states. [2023-04-01 13:27:48,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2511 to 2489. [2023-04-01 13:27:48,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2489 states, 1636 states have (on average 1.311124694376528) internal successors, (2145), 1652 states have internal predecessors, (2145), 513 states have call successors, (513), 318 states have call predecessors, (513), 339 states have return successors, (564), 526 states have call predecessors, (564), 510 states have call successors, (564) [2023-04-01 13:27:48,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2489 states to 2489 states and 3222 transitions. [2023-04-01 13:27:48,938 INFO L78 Accepts]: Start accepts. Automaton has 2489 states and 3222 transitions. Word has length 169 [2023-04-01 13:27:48,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 13:27:48,942 INFO L495 AbstractCegarLoop]: Abstraction has 2489 states and 3222 transitions. [2023-04-01 13:27:48,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 9 states have internal predecessors, (93), 5 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (28), 7 states have call predecessors, (28), 5 states have call successors, (28) [2023-04-01 13:27:48,942 INFO L276 IsEmpty]: Start isEmpty. Operand 2489 states and 3222 transitions. [2023-04-01 13:27:48,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2023-04-01 13:27:48,949 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 13:27:48,949 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 13:27:48,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-04-01 13:27:48,949 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 13:27:48,950 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 13:27:48,950 INFO L85 PathProgramCache]: Analyzing trace with hash -503057722, now seen corresponding path program 1 times [2023-04-01 13:27:48,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 13:27:48,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281941602] [2023-04-01 13:27:48,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 13:27:48,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 13:27:49,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 13:27:49,392 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-04-01 13:27:49,392 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 13:27:49,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281941602] [2023-04-01 13:27:49,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281941602] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 13:27:49,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2015727424] [2023-04-01 13:27:49,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 13:27:49,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 13:27:49,393 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 13:27:49,396 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 13:27:49,397 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-01 13:27:49,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 13:27:49,905 INFO L262 TraceCheckSpWp]: Trace formula consists of 1631 conjuncts, 7 conjunts are in the unsatisfiable core [2023-04-01 13:27:49,916 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 13:27:49,973 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2023-04-01 13:27:49,973 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 13:27:49,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2015727424] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 13:27:49,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 13:27:49,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-04-01 13:27:49,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389804313] [2023-04-01 13:27:49,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 13:27:49,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-01 13:27:49,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 13:27:49,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-01 13:27:49,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-04-01 13:27:49,975 INFO L87 Difference]: Start difference. First operand 2489 states and 3222 transitions. Second operand has 4 states, 3 states have (on average 28.666666666666668) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2023-04-01 13:27:51,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 13:27:51,567 INFO L93 Difference]: Finished difference Result 4954 states and 6420 transitions. [2023-04-01 13:27:51,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-04-01 13:27:51,568 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 28.666666666666668) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 160 [2023-04-01 13:27:51,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 13:27:51,582 INFO L225 Difference]: With dead ends: 4954 [2023-04-01 13:27:51,582 INFO L226 Difference]: Without dead ends: 2490 [2023-04-01 13:27:51,591 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-04-01 13:27:51,592 INFO L413 NwaCegarLoop]: 430 mSDtfsCounter, 1 mSDsluCounter, 857 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1287 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-04-01 13:27:51,592 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1287 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-04-01 13:27:51,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2490 states. [2023-04-01 13:27:51,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2490 to 2490. [2023-04-01 13:27:51,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2490 states, 1637 states have (on average 1.3109346365302383) internal successors, (2146), 1653 states have internal predecessors, (2146), 513 states have call successors, (513), 318 states have call predecessors, (513), 339 states have return successors, (564), 526 states have call predecessors, (564), 510 states have call successors, (564) [2023-04-01 13:27:51,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2490 states to 2490 states and 3223 transitions. [2023-04-01 13:27:51,735 INFO L78 Accepts]: Start accepts. Automaton has 2490 states and 3223 transitions. Word has length 160 [2023-04-01 13:27:51,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 13:27:51,736 INFO L495 AbstractCegarLoop]: Abstraction has 2490 states and 3223 transitions. [2023-04-01 13:27:51,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 28.666666666666668) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2023-04-01 13:27:51,736 INFO L276 IsEmpty]: Start isEmpty. Operand 2490 states and 3223 transitions. [2023-04-01 13:27:51,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2023-04-01 13:27:51,742 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 13:27:51,742 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 13:27:51,755 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-04-01 13:27:51,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 13:27:51,952 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 13:27:51,953 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 13:27:51,953 INFO L85 PathProgramCache]: Analyzing trace with hash -551380393, now seen corresponding path program 1 times [2023-04-01 13:27:51,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 13:27:51,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991813213] [2023-04-01 13:27:51,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 13:27:51,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 13:27:52,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 13:27:52,462 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2023-04-01 13:27:52,462 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 13:27:52,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991813213] [2023-04-01 13:27:52,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991813213] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 13:27:52,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1784461914] [2023-04-01 13:27:52,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 13:27:52,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 13:27:52,463 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 13:27:52,464 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 13:27:52,467 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-04-01 13:27:53,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 13:27:53,168 INFO L262 TraceCheckSpWp]: Trace formula consists of 1717 conjuncts, 7 conjunts are in the unsatisfiable core [2023-04-01 13:27:53,175 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 13:27:53,202 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 26 proven. 1 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-04-01 13:27:53,202 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 13:27:53,403 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2023-04-01 13:27:53,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1784461914] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 13:27:53,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [429686973] [2023-04-01 13:27:53,471 INFO L159 IcfgInterpreter]: Started Sifa with 141 locations of interest [2023-04-01 13:27:53,471 INFO L166 IcfgInterpreter]: Building call graph [2023-04-01 13:27:53,474 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-01 13:27:53,479 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-01 13:27:53,479 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-01 13:28:00,005 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 148 for LOIs [2023-04-01 13:28:00,812 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 304 for LOIs