./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--char--ipmi--ipmi_msghandler.ko-main.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--char--ipmi--ipmi_msghandler.ko-main.cil.out.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 19525e6f83ed492183d9a21eaa90e9685989ff90c55473d8827091d7561f2601 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 10:40:37,915 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 10:40:37,918 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 10:40:37,952 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 10:40:37,952 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 10:40:37,953 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 10:40:37,956 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 10:40:37,959 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 10:40:37,960 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 10:40:37,963 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 10:40:37,964 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 10:40:37,966 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 10:40:37,966 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 10:40:37,968 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 10:40:37,968 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 10:40:37,974 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 10:40:37,974 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 10:40:37,975 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 10:40:37,976 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 10:40:37,992 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 10:40:37,993 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 10:40:37,994 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 10:40:37,994 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 10:40:37,995 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 10:40:37,996 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 10:40:37,997 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 10:40:37,997 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 10:40:37,997 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 10:40:37,998 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 10:40:37,998 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 10:40:37,999 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 10:40:37,999 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 10:40:37,999 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 10:40:38,000 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 10:40:38,000 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 10:40:38,001 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 10:40:38,001 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 10:40:38,002 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 10:40:38,005 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 10:40:38,005 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 10:40:38,005 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 10:40:38,006 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 10:40:38,007 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-21 10:40:38,028 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 10:40:38,029 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 10:40:38,029 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 10:40:38,029 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 10:40:38,030 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 10:40:38,030 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 10:40:38,030 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 10:40:38,030 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 10:40:38,031 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 10:40:38,032 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 10:40:38,032 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 10:40:38,032 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 10:40:38,032 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 10:40:38,032 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 10:40:38,041 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 10:40:38,041 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 10:40:38,042 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 10:40:38,042 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 10:40:38,042 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 10:40:38,042 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 10:40:38,042 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 10:40:38,043 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 10:40:38,043 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 10:40:38,043 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 10:40:38,043 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 10:40:38,043 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 10:40:38,043 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 10:40:38,044 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 10:40:38,044 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 10:40:38,044 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 10:40:38,044 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 19525e6f83ed492183d9a21eaa90e9685989ff90c55473d8827091d7561f2601 [2022-07-21 10:40:38,301 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 10:40:38,316 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 10:40:38,318 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 10:40:38,319 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 10:40:38,319 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 10:40:38,321 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--char--ipmi--ipmi_msghandler.ko-main.cil.out.i [2022-07-21 10:40:38,365 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af8990331/20d6daf40f2e4fc2bdd8ab0783958e94/FLAG81f00c677 [2022-07-21 10:40:39,026 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 10:40:39,027 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--char--ipmi--ipmi_msghandler.ko-main.cil.out.i [2022-07-21 10:40:39,069 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af8990331/20d6daf40f2e4fc2bdd8ab0783958e94/FLAG81f00c677 [2022-07-21 10:40:39,141 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af8990331/20d6daf40f2e4fc2bdd8ab0783958e94 [2022-07-21 10:40:39,143 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 10:40:39,145 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 10:40:39,147 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 10:40:39,147 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 10:40:39,150 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 10:40:39,150 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 10:40:39" (1/1) ... [2022-07-21 10:40:39,151 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a64b94b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:40:39, skipping insertion in model container [2022-07-21 10:40:39,151 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 10:40:39" (1/1) ... [2022-07-21 10:40:39,156 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 10:40:39,280 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 10:40:40,940 WARN L230 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-consumption/32_7a_cilled_linux-3.8-rc1-drivers--char--ipmi--ipmi_msghandler.ko-main.cil.out.i[265597,265610] [2022-07-21 10:40:41,045 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 10:40:41,079 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 10:40:41,440 WARN L230 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-consumption/32_7a_cilled_linux-3.8-rc1-drivers--char--ipmi--ipmi_msghandler.ko-main.cil.out.i[265597,265610] [2022-07-21 10:40:41,450 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 10:40:41,535 INFO L208 MainTranslator]: Completed translation [2022-07-21 10:40:41,537 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:40:41 WrapperNode [2022-07-21 10:40:41,537 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 10:40:41,538 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 10:40:41,539 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 10:40:41,539 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 10:40:41,543 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:40:41" (1/1) ... [2022-07-21 10:40:41,644 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:40:41" (1/1) ... [2022-07-21 10:40:41,740 INFO L137 Inliner]: procedures = 389, calls = 2919, calls flagged for inlining = 156, calls inlined = 64, statements flattened = 3344 [2022-07-21 10:40:41,741 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 10:40:41,742 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 10:40:41,742 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 10:40:41,743 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 10:40:41,755 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:40:41" (1/1) ... [2022-07-21 10:40:41,755 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:40:41" (1/1) ... [2022-07-21 10:40:41,815 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:40:41" (1/1) ... [2022-07-21 10:40:41,815 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:40:41" (1/1) ... [2022-07-21 10:40:41,902 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:40:41" (1/1) ... [2022-07-21 10:40:41,922 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:40:41" (1/1) ... [2022-07-21 10:40:41,944 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:40:41" (1/1) ... [2022-07-21 10:40:41,963 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 10:40:41,965 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 10:40:41,965 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 10:40:41,965 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 10:40:41,966 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:40:41" (1/1) ... [2022-07-21 10:40:41,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 10:40:41,979 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 10:40:42,004 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) [2022-07-21 10:40:42,018 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 [2022-07-21 10:40:42,041 INFO L130 BoogieDeclarations]: Found specification of procedure smi_stats_proc_open [2022-07-21 10:40:42,042 INFO L138 BoogieDeclarations]: Found implementation of procedure smi_stats_proc_open [2022-07-21 10:40:42,042 INFO L130 BoogieDeclarations]: Found specification of procedure debug_lockdep_rcu_enabled [2022-07-21 10:40:42,042 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_lockdep_rcu_enabled [2022-07-21 10:40:42,042 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-07-21 10:40:42,042 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-07-21 10:40:42,042 INFO L130 BoogieDeclarations]: Found specification of procedure ipmi_poll [2022-07-21 10:40:42,042 INFO L138 BoogieDeclarations]: Found implementation of procedure ipmi_poll [2022-07-21 10:40:42,043 INFO L130 BoogieDeclarations]: Found specification of procedure format_lan_msg [2022-07-21 10:40:42,043 INFO L138 BoogieDeclarations]: Found implementation of procedure format_lan_msg [2022-07-21 10:40:42,043 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~VOID [2022-07-21 10:40:42,043 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~VOID [2022-07-21 10:40:42,043 INFO L130 BoogieDeclarations]: Found specification of procedure copy_event_into_recv_msg [2022-07-21 10:40:42,043 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_event_into_recv_msg [2022-07-21 10:40:42,043 INFO L130 BoogieDeclarations]: Found specification of procedure ipmi_panic_request_and_wait [2022-07-21 10:40:42,043 INFO L138 BoogieDeclarations]: Found implementation of procedure ipmi_panic_request_and_wait [2022-07-21 10:40:42,044 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-07-21 10:40:42,044 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-07-21 10:40:42,044 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_cmd_rcvrs_mutex_of_ipmi_smi [2022-07-21 10:40:42,044 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_cmd_rcvrs_mutex_of_ipmi_smi [2022-07-21 10:40:42,044 INFO L130 BoogieDeclarations]: Found specification of procedure remove_proc_entry [2022-07-21 10:40:42,044 INFO L138 BoogieDeclarations]: Found implementation of procedure remove_proc_entry [2022-07-21 10:40:42,044 INFO L130 BoogieDeclarations]: Found specification of procedure platform_device_unregister [2022-07-21 10:40:42,044 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_device_unregister [2022-07-21 10:40:42,045 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-07-21 10:40:42,045 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-07-21 10:40:42,045 INFO L130 BoogieDeclarations]: Found specification of procedure intf_next_seq [2022-07-21 10:40:42,045 INFO L138 BoogieDeclarations]: Found implementation of procedure intf_next_seq [2022-07-21 10:40:42,045 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-21 10:40:42,045 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_cmd_rcvrs_mutex_of_ipmi_smi [2022-07-21 10:40:42,045 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_cmd_rcvrs_mutex_of_ipmi_smi [2022-07-21 10:40:42,045 INFO L130 BoogieDeclarations]: Found specification of procedure PDE [2022-07-21 10:40:42,046 INFO L138 BoogieDeclarations]: Found implementation of procedure PDE [2022-07-21 10:40:42,046 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2022-07-21 10:40:42,046 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2022-07-21 10:40:42,046 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-07-21 10:40:42,047 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-07-21 10:40:42,047 INFO L130 BoogieDeclarations]: Found specification of procedure i_ipmi_request [2022-07-21 10:40:42,047 INFO L138 BoogieDeclarations]: Found implementation of procedure i_ipmi_request [2022-07-21 10:40:42,047 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-07-21 10:40:42,047 INFO L130 BoogieDeclarations]: Found specification of procedure free_smi_msg_list [2022-07-21 10:40:42,047 INFO L138 BoogieDeclarations]: Found implementation of procedure free_smi_msg_list [2022-07-21 10:40:42,047 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-07-21 10:40:42,048 INFO L130 BoogieDeclarations]: Found specification of procedure kref_get [2022-07-21 10:40:42,048 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_get [2022-07-21 10:40:42,048 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-21 10:40:42,048 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-07-21 10:40:42,048 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-07-21 10:40:42,048 INFO L130 BoogieDeclarations]: Found specification of procedure maintenance_mode_update [2022-07-21 10:40:42,049 INFO L138 BoogieDeclarations]: Found implementation of procedure maintenance_mode_update [2022-07-21 10:40:42,049 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2022-07-21 10:40:42,049 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2022-07-21 10:40:42,049 INFO L130 BoogieDeclarations]: Found specification of procedure kref_put [2022-07-21 10:40:42,049 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_put [2022-07-21 10:40:42,049 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_lock [2022-07-21 10:40:42,050 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_lock [2022-07-21 10:40:42,050 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-21 10:40:42,051 INFO L130 BoogieDeclarations]: Found specification of procedure smi_version_proc_open [2022-07-21 10:40:42,051 INFO L138 BoogieDeclarations]: Found implementation of procedure smi_version_proc_open [2022-07-21 10:40:42,051 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2022-07-21 10:40:42,051 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2022-07-21 10:40:42,052 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 10:40:42,052 INFO L130 BoogieDeclarations]: Found specification of procedure send_channel_info_cmd [2022-07-21 10:40:42,052 INFO L138 BoogieDeclarations]: Found implementation of procedure send_channel_info_cmd [2022-07-21 10:40:42,052 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-21 10:40:42,052 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-07-21 10:40:42,052 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-07-21 10:40:42,052 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-07-21 10:40:42,052 INFO L130 BoogieDeclarations]: Found specification of procedure ipmi_alloc_smi_msg [2022-07-21 10:40:42,053 INFO L138 BoogieDeclarations]: Found implementation of procedure ipmi_alloc_smi_msg [2022-07-21 10:40:42,053 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2022-07-21 10:40:42,053 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2022-07-21 10:40:42,053 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2022-07-21 10:40:42,054 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2022-07-21 10:40:42,054 INFO L130 BoogieDeclarations]: Found specification of procedure handle_new_recv_msgs [2022-07-21 10:40:42,054 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_new_recv_msgs [2022-07-21 10:40:42,054 INFO L130 BoogieDeclarations]: Found specification of procedure is_lan_addr [2022-07-21 10:40:42,054 INFO L138 BoogieDeclarations]: Found implementation of procedure is_lan_addr [2022-07-21 10:40:42,054 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-07-21 10:40:42,054 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-07-21 10:40:42,054 INFO L130 BoogieDeclarations]: Found specification of procedure intf_free [2022-07-21 10:40:42,054 INFO L138 BoogieDeclarations]: Found implementation of procedure intf_free [2022-07-21 10:40:42,055 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 10:40:42,055 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 10:40:42,055 INFO L130 BoogieDeclarations]: Found specification of procedure __cmpxchg_wrong_size [2022-07-21 10:40:42,055 INFO L130 BoogieDeclarations]: Found specification of procedure kref_sub [2022-07-21 10:40:42,055 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_sub [2022-07-21 10:40:42,055 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-07-21 10:40:42,055 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-07-21 10:40:42,056 INFO L130 BoogieDeclarations]: Found specification of procedure intf_find_seq [2022-07-21 10:40:42,056 INFO L138 BoogieDeclarations]: Found implementation of procedure intf_find_seq [2022-07-21 10:40:42,056 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-07-21 10:40:42,056 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-07-21 10:40:42,056 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-07-21 10:40:42,056 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-07-21 10:40:42,057 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2022-07-21 10:40:42,057 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2022-07-21 10:40:42,057 INFO L130 BoogieDeclarations]: Found specification of procedure ipmi_free_smi_msg [2022-07-21 10:40:42,058 INFO L138 BoogieDeclarations]: Found implementation of procedure ipmi_free_smi_msg [2022-07-21 10:40:42,058 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-07-21 10:40:42,058 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-07-21 10:40:42,058 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-21 10:40:42,058 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-07-21 10:40:42,059 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-07-21 10:40:42,059 INFO L130 BoogieDeclarations]: Found specification of procedure proc_mkdir [2022-07-21 10:40:42,059 INFO L138 BoogieDeclarations]: Found implementation of procedure proc_mkdir [2022-07-21 10:40:42,059 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-21 10:40:42,059 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-21 10:40:42,059 INFO L130 BoogieDeclarations]: Found specification of procedure find_cmd_rcvr [2022-07-21 10:40:42,059 INFO L138 BoogieDeclarations]: Found implementation of procedure find_cmd_rcvr [2022-07-21 10:40:42,060 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2022-07-21 10:40:42,060 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2022-07-21 10:40:42,060 INFO L130 BoogieDeclarations]: Found specification of procedure ipmi_init_msghandler [2022-07-21 10:40:42,060 INFO L138 BoogieDeclarations]: Found implementation of procedure ipmi_init_msghandler [2022-07-21 10:40:42,060 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2022-07-21 10:40:42,060 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2022-07-21 10:40:42,060 INFO L130 BoogieDeclarations]: Found specification of procedure clean_up_interface_data [2022-07-21 10:40:42,061 INFO L138 BoogieDeclarations]: Found implementation of procedure clean_up_interface_data [2022-07-21 10:40:42,061 INFO L130 BoogieDeclarations]: Found specification of procedure ipmi_alloc_recv_msg [2022-07-21 10:40:42,063 INFO L138 BoogieDeclarations]: Found implementation of procedure ipmi_alloc_recv_msg [2022-07-21 10:40:42,063 INFO L130 BoogieDeclarations]: Found specification of procedure single_open [2022-07-21 10:40:42,063 INFO L138 BoogieDeclarations]: Found implementation of procedure single_open [2022-07-21 10:40:42,063 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_lock_held [2022-07-21 10:40:42,064 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_lock_held [2022-07-21 10:40:42,065 INFO L130 BoogieDeclarations]: Found specification of procedure synchronize_rcu [2022-07-21 10:40:42,065 INFO L138 BoogieDeclarations]: Found implementation of procedure synchronize_rcu [2022-07-21 10:40:42,065 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~VOID [2022-07-21 10:40:42,065 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~VOID [2022-07-21 10:40:42,069 INFO L130 BoogieDeclarations]: Found specification of procedure smi_ipmb_proc_open [2022-07-21 10:40:42,070 INFO L138 BoogieDeclarations]: Found implementation of procedure smi_ipmb_proc_open [2022-07-21 10:40:42,070 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-07-21 10:40:42,070 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-07-21 10:40:42,070 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-21 10:40:42,070 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-07-21 10:40:42,070 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-07-21 10:40:42,070 INFO L130 BoogieDeclarations]: Found specification of procedure is_ipmb_addr [2022-07-21 10:40:42,070 INFO L138 BoogieDeclarations]: Found implementation of procedure is_ipmb_addr [2022-07-21 10:40:42,070 INFO L130 BoogieDeclarations]: Found specification of procedure is_ipmb_bcast_addr [2022-07-21 10:40:42,071 INFO L138 BoogieDeclarations]: Found implementation of procedure is_ipmb_bcast_addr [2022-07-21 10:40:42,071 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_is_cpu_idle [2022-07-21 10:40:42,071 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_is_cpu_idle [2022-07-21 10:40:42,071 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2022-07-21 10:40:42,071 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2022-07-21 10:40:42,071 INFO L130 BoogieDeclarations]: Found specification of procedure format_ipmb_msg [2022-07-21 10:40:42,071 INFO L138 BoogieDeclarations]: Found implementation of procedure format_ipmb_msg [2022-07-21 10:40:42,071 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_rcu_suspicious [2022-07-21 10:40:42,071 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_rcu_suspicious [2022-07-21 10:40:42,072 INFO L130 BoogieDeclarations]: Found specification of procedure free_recv_msg_list [2022-07-21 10:40:42,072 INFO L138 BoogieDeclarations]: Found implementation of procedure free_recv_msg_list [2022-07-21 10:40:42,072 INFO L130 BoogieDeclarations]: Found specification of procedure current_thread_info [2022-07-21 10:40:42,072 INFO L138 BoogieDeclarations]: Found implementation of procedure current_thread_info [2022-07-21 10:40:42,072 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec [2022-07-21 10:40:42,072 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec [2022-07-21 10:40:42,072 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2022-07-21 10:40:42,072 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2022-07-21 10:40:42,072 INFO L130 BoogieDeclarations]: Found specification of procedure ipmb_checksum [2022-07-21 10:40:42,073 INFO L138 BoogieDeclarations]: Found implementation of procedure ipmb_checksum [2022-07-21 10:40:42,073 INFO L130 BoogieDeclarations]: Found specification of procedure deliver_response [2022-07-21 10:40:42,073 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver_response [2022-07-21 10:40:42,073 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_unlock [2022-07-21 10:40:42,073 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_unlock [2022-07-21 10:40:42,073 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 10:40:42,073 INFO L130 BoogieDeclarations]: Found specification of procedure ipmi_free_recv_msg [2022-07-21 10:40:42,073 INFO L138 BoogieDeclarations]: Found implementation of procedure ipmi_free_recv_msg [2022-07-21 10:40:42,073 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2022-07-21 10:40:42,074 INFO L130 BoogieDeclarations]: Found specification of procedure device_remove_file [2022-07-21 10:40:42,074 INFO L138 BoogieDeclarations]: Found implementation of procedure device_remove_file [2022-07-21 10:40:42,733 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 10:40:42,735 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 10:40:49,987 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 10:40:50,006 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 10:40:50,007 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-21 10:40:50,011 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 10:40:50 BoogieIcfgContainer [2022-07-21 10:40:50,011 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 10:40:50,013 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 10:40:50,013 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 10:40:50,015 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 10:40:50,015 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 10:40:39" (1/3) ... [2022-07-21 10:40:50,016 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c9e58fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 10:40:50, skipping insertion in model container [2022-07-21 10:40:50,016 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:40:41" (2/3) ... [2022-07-21 10:40:50,017 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c9e58fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 10:40:50, skipping insertion in model container [2022-07-21 10:40:50,017 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 10:40:50" (3/3) ... [2022-07-21 10:40:50,018 INFO L111 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--char--ipmi--ipmi_msghandler.ko-main.cil.out.i [2022-07-21 10:40:50,030 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 10:40:50,030 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 10:40:50,138 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 10:40:50,143 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=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=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@279e1f1a, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@37ef8f85 [2022-07-21 10:40:50,143 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-21 10:40:50,150 INFO L276 IsEmpty]: Start isEmpty. Operand has 1250 states, 870 states have (on average 1.3781609195402298) internal successors, (1199), 920 states have internal predecessors, (1199), 304 states have call successors, (304), 74 states have call predecessors, (304), 74 states have return successors, (304), 298 states have call predecessors, (304), 304 states have call successors, (304) [2022-07-21 10:40:50,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-07-21 10:40:50,160 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 10:40:50,160 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 10:40:50,161 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 10:40:50,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 10:40:50,166 INFO L85 PathProgramCache]: Analyzing trace with hash -1353827036, now seen corresponding path program 1 times [2022-07-21 10:40:50,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 10:40:50,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709786933] [2022-07-21 10:40:50,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 10:40:50,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 10:40:50,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:40:50,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 10:40:50,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 10:40:50,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709786933] [2022-07-21 10:40:50,623 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709786933] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 10:40:50,623 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 10:40:50,624 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 10:40:50,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728826806] [2022-07-21 10:40:50,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 10:40:50,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 10:40:50,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 10:40:50,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 10:40:50,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 10:40:50,656 INFO L87 Difference]: Start difference. First operand has 1250 states, 870 states have (on average 1.3781609195402298) internal successors, (1199), 920 states have internal predecessors, (1199), 304 states have call successors, (304), 74 states have call predecessors, (304), 74 states have return successors, (304), 298 states have call predecessors, (304), 304 states have call successors, (304) Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 10:40:51,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 10:40:51,033 INFO L93 Difference]: Finished difference Result 3675 states and 5434 transitions. [2022-07-21 10:40:51,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 10:40:51,036 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-07-21 10:40:51,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 10:40:51,064 INFO L225 Difference]: With dead ends: 3675 [2022-07-21 10:40:51,064 INFO L226 Difference]: Without dead ends: 2424 [2022-07-21 10:40:51,077 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 [2022-07-21 10:40:51,082 INFO L413 NwaCegarLoop]: 2847 mSDtfsCounter, 1711 mSDsluCounter, 1736 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1711 SdHoareTripleChecker+Valid, 4583 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 10:40:51,084 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1711 Valid, 4583 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 10:40:51,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2424 states. [2022-07-21 10:40:51,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2424 to 2420. [2022-07-21 10:40:51,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2420 states, 1687 states have (on average 1.3556609365737997) internal successors, (2287), 1774 states have internal predecessors, (2287), 590 states have call successors, (590), 143 states have call predecessors, (590), 142 states have return successors, (580), 568 states have call predecessors, (580), 580 states have call successors, (580) [2022-07-21 10:40:51,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2420 states to 2420 states and 3457 transitions. [2022-07-21 10:40:51,307 INFO L78 Accepts]: Start accepts. Automaton has 2420 states and 3457 transitions. Word has length 16 [2022-07-21 10:40:51,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 10:40:51,307 INFO L495 AbstractCegarLoop]: Abstraction has 2420 states and 3457 transitions. [2022-07-21 10:40:51,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 10:40:51,308 INFO L276 IsEmpty]: Start isEmpty. Operand 2420 states and 3457 transitions. [2022-07-21 10:40:51,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-07-21 10:40:51,314 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 10:40:51,314 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 10:40:51,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 10:40:51,315 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 10:40:51,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 10:40:51,316 INFO L85 PathProgramCache]: Analyzing trace with hash -1697719892, now seen corresponding path program 1 times [2022-07-21 10:40:51,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 10:40:51,318 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243332337] [2022-07-21 10:40:51,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 10:40:51,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 10:40:51,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:40:51,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-21 10:40:51,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:40:51,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 10:40:51,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 10:40:51,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243332337] [2022-07-21 10:40:51,479 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243332337] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 10:40:51,479 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 10:40:51,479 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 10:40:51,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91927295] [2022-07-21 10:40:51,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 10:40:51,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 10:40:51,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 10:40:51,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 10:40:51,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-21 10:40:51,483 INFO L87 Difference]: Start difference. First operand 2420 states and 3457 transitions. Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-21 10:41:02,656 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 10:41:04,687 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 10:41:07,146 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 10:41:09,915 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 10:41:14,402 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 10:41:15,930 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 10:41:17,960 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 10:41:18,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 10:41:18,328 INFO L93 Difference]: Finished difference Result 7503 states and 10878 transitions. [2022-07-21 10:41:18,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-21 10:41:18,329 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2022-07-21 10:41:18,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 10:41:18,356 INFO L225 Difference]: With dead ends: 7503 [2022-07-21 10:41:18,356 INFO L226 Difference]: Without dead ends: 5086 [2022-07-21 10:41:18,366 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-07-21 10:41:18,371 INFO L413 NwaCegarLoop]: 2080 mSDtfsCounter, 3074 mSDsluCounter, 701 mSDsCounter, 0 mSdLazyCounter, 6540 mSolverCounterSat, 2060 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3390 SdHoareTripleChecker+Valid, 2781 SdHoareTripleChecker+Invalid, 8605 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2060 IncrementalHoareTripleChecker+Valid, 6540 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.3s IncrementalHoareTripleChecker+Time [2022-07-21 10:41:18,372 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3390 Valid, 2781 Invalid, 8605 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2060 Valid, 6540 Invalid, 5 Unknown, 0 Unchecked, 26.3s Time] [2022-07-21 10:41:18,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5086 states. [2022-07-21 10:41:18,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5086 to 4778. [2022-07-21 10:41:18,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4778 states, 3336 states have (on average 1.3558153477218224) internal successors, (4523), 3500 states have internal predecessors, (4523), 1159 states have call successors, (1159), 282 states have call predecessors, (1159), 282 states have return successors, (1154), 1125 states have call predecessors, (1154), 1149 states have call successors, (1154) [2022-07-21 10:41:18,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4778 states to 4778 states and 6836 transitions. [2022-07-21 10:41:18,577 INFO L78 Accepts]: Start accepts. Automaton has 4778 states and 6836 transitions. Word has length 23 [2022-07-21 10:41:18,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 10:41:18,577 INFO L495 AbstractCegarLoop]: Abstraction has 4778 states and 6836 transitions. [2022-07-21 10:41:18,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-21 10:41:18,578 INFO L276 IsEmpty]: Start isEmpty. Operand 4778 states and 6836 transitions. [2022-07-21 10:41:18,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-07-21 10:41:18,579 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 10:41:18,579 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 10:41:18,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-21 10:41:18,580 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 10:41:18,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 10:41:18,580 INFO L85 PathProgramCache]: Analyzing trace with hash -1343888216, now seen corresponding path program 1 times [2022-07-21 10:41:18,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 10:41:18,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593977893] [2022-07-21 10:41:18,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 10:41:18,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 10:41:18,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:41:18,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-21 10:41:18,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:41:18,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 10:41:18,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 10:41:18,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593977893] [2022-07-21 10:41:18,714 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593977893] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 10:41:18,715 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 10:41:18,715 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 10:41:18,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635659579] [2022-07-21 10:41:18,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 10:41:18,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 10:41:18,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 10:41:18,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 10:41:18,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 10:41:18,716 INFO L87 Difference]: Start difference. First operand 4778 states and 6836 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-21 10:41:26,464 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.70s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 10:41:28,497 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 10:41:28,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 10:41:28,709 INFO L93 Difference]: Finished difference Result 9653 states and 13951 transitions. [2022-07-21 10:41:28,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 10:41:28,709 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 25 [2022-07-21 10:41:28,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 10:41:28,727 INFO L225 Difference]: With dead ends: 9653 [2022-07-21 10:41:28,727 INFO L226 Difference]: Without dead ends: 4878 [2022-07-21 10:41:28,739 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-07-21 10:41:28,740 INFO L413 NwaCegarLoop]: 1766 mSDtfsCounter, 2131 mSDsluCounter, 1343 mSDsCounter, 0 mSdLazyCounter, 1918 mSolverCounterSat, 607 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2312 SdHoareTripleChecker+Valid, 3109 SdHoareTripleChecker+Invalid, 2526 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 607 IncrementalHoareTripleChecker+Valid, 1918 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.7s IncrementalHoareTripleChecker+Time [2022-07-21 10:41:28,740 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2312 Valid, 3109 Invalid, 2526 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [607 Valid, 1918 Invalid, 1 Unknown, 0 Unchecked, 9.7s Time] [2022-07-21 10:41:28,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4878 states. [2022-07-21 10:41:28,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4878 to 4590. [2022-07-21 10:41:28,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4590 states, 3190 states have (on average 1.352037617554859) internal successors, (4313), 3350 states have internal predecessors, (4313), 1125 states have call successors, (1125), 274 states have call predecessors, (1125), 274 states have return successors, (1119), 1090 states have call predecessors, (1119), 1115 states have call successors, (1119) [2022-07-21 10:41:28,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4590 states to 4590 states and 6557 transitions. [2022-07-21 10:41:28,868 INFO L78 Accepts]: Start accepts. Automaton has 4590 states and 6557 transitions. Word has length 25 [2022-07-21 10:41:28,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 10:41:28,869 INFO L495 AbstractCegarLoop]: Abstraction has 4590 states and 6557 transitions. [2022-07-21 10:41:28,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-21 10:41:28,869 INFO L276 IsEmpty]: Start isEmpty. Operand 4590 states and 6557 transitions. [2022-07-21 10:41:28,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-07-21 10:41:28,871 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 10:41:28,871 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] [2022-07-21 10:41:28,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-21 10:41:28,872 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 10:41:28,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 10:41:28,872 INFO L85 PathProgramCache]: Analyzing trace with hash -1947073205, now seen corresponding path program 1 times [2022-07-21 10:41:28,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 10:41:28,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163539479] [2022-07-21 10:41:28,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 10:41:28,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 10:41:28,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:41:28,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-21 10:41:28,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:41:28,995 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-21 10:41:29,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 10:41:29,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163539479] [2022-07-21 10:41:29,012 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163539479] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 10:41:29,012 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 10:41:29,012 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 10:41:29,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187964334] [2022-07-21 10:41:29,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 10:41:29,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 10:41:29,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 10:41:29,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 10:41:29,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 10:41:29,013 INFO L87 Difference]: Start difference. First operand 4590 states and 6557 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-21 10:41:33,439 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 10:41:36,530 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 10:41:38,043 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 10:41:38,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 10:41:38,237 INFO L93 Difference]: Finished difference Result 4903 states and 7128 transitions. [2022-07-21 10:41:38,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 10:41:38,237 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 35 [2022-07-21 10:41:38,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 10:41:38,256 INFO L225 Difference]: With dead ends: 4903 [2022-07-21 10:41:38,257 INFO L226 Difference]: Without dead ends: 4899 [2022-07-21 10:41:38,259 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 10:41:38,259 INFO L413 NwaCegarLoop]: 1603 mSDtfsCounter, 1871 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 1131 mSolverCounterSat, 564 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2031 SdHoareTripleChecker+Valid, 1799 SdHoareTripleChecker+Invalid, 1697 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 564 IncrementalHoareTripleChecker+Valid, 1131 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.0s IncrementalHoareTripleChecker+Time [2022-07-21 10:41:38,259 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2031 Valid, 1799 Invalid, 1697 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [564 Valid, 1131 Invalid, 2 Unknown, 0 Unchecked, 9.0s Time] [2022-07-21 10:41:38,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4899 states. [2022-07-21 10:41:38,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4899 to 4612. [2022-07-21 10:41:38,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4612 states, 3206 states have (on average 1.3487211478477854) internal successors, (4324), 3364 states have internal predecessors, (4324), 1123 states have call successors, (1123), 282 states have call predecessors, (1123), 282 states have return successors, (1119), 1090 states have call predecessors, (1119), 1115 states have call successors, (1119) [2022-07-21 10:41:38,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4612 states to 4612 states and 6566 transitions. [2022-07-21 10:41:38,399 INFO L78 Accepts]: Start accepts. Automaton has 4612 states and 6566 transitions. Word has length 35 [2022-07-21 10:41:38,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 10:41:38,400 INFO L495 AbstractCegarLoop]: Abstraction has 4612 states and 6566 transitions. [2022-07-21 10:41:38,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-21 10:41:38,400 INFO L276 IsEmpty]: Start isEmpty. Operand 4612 states and 6566 transitions. [2022-07-21 10:41:38,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-07-21 10:41:38,401 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 10:41:38,401 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] [2022-07-21 10:41:38,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-21 10:41:38,402 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 10:41:38,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 10:41:38,402 INFO L85 PathProgramCache]: Analyzing trace with hash -230381267, now seen corresponding path program 1 times [2022-07-21 10:41:38,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 10:41:38,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591921510] [2022-07-21 10:41:38,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 10:41:38,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 10:41:38,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:41:38,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-21 10:41:38,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:41:38,526 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-21 10:41:38,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 10:41:38,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591921510] [2022-07-21 10:41:38,526 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591921510] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 10:41:38,526 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 10:41:38,526 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 10:41:38,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839999483] [2022-07-21 10:41:38,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 10:41:38,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 10:41:38,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 10:41:38,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 10:41:38,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 10:41:38,528 INFO L87 Difference]: Start difference. First operand 4612 states and 6566 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-21 10:41:43,399 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 10:41:45,097 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 10:41:47,130 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 10:41:47,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 10:41:47,343 INFO L93 Difference]: Finished difference Result 4899 states and 7120 transitions. [2022-07-21 10:41:47,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 10:41:47,344 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 36 [2022-07-21 10:41:47,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 10:41:47,365 INFO L225 Difference]: With dead ends: 4899 [2022-07-21 10:41:47,365 INFO L226 Difference]: Without dead ends: 4896 [2022-07-21 10:41:47,369 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 10:41:47,369 INFO L413 NwaCegarLoop]: 1608 mSDtfsCounter, 1892 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 1124 mSolverCounterSat, 538 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2071 SdHoareTripleChecker+Valid, 1786 SdHoareTripleChecker+Invalid, 1663 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 538 IncrementalHoareTripleChecker+Valid, 1124 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.7s IncrementalHoareTripleChecker+Time [2022-07-21 10:41:47,370 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2071 Valid, 1786 Invalid, 1663 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [538 Valid, 1124 Invalid, 1 Unknown, 0 Unchecked, 8.7s Time] [2022-07-21 10:41:47,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4896 states. [2022-07-21 10:41:47,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4896 to 4611. [2022-07-21 10:41:47,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4611 states, 3206 states have (on average 1.3484092326887087) internal successors, (4323), 3363 states have internal predecessors, (4323), 1122 states have call successors, (1122), 282 states have call predecessors, (1122), 282 states have return successors, (1119), 1090 states have call predecessors, (1119), 1115 states have call successors, (1119) [2022-07-21 10:41:47,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4611 states to 4611 states and 6564 transitions. [2022-07-21 10:41:47,556 INFO L78 Accepts]: Start accepts. Automaton has 4611 states and 6564 transitions. Word has length 36 [2022-07-21 10:41:47,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 10:41:47,557 INFO L495 AbstractCegarLoop]: Abstraction has 4611 states and 6564 transitions. [2022-07-21 10:41:47,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-21 10:41:47,557 INFO L276 IsEmpty]: Start isEmpty. Operand 4611 states and 6564 transitions. [2022-07-21 10:41:47,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-07-21 10:41:47,558 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 10:41:47,559 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] [2022-07-21 10:41:47,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-21 10:41:47,559 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 10:41:47,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 10:41:47,559 INFO L85 PathProgramCache]: Analyzing trace with hash 1447466126, now seen corresponding path program 1 times [2022-07-21 10:41:47,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 10:41:47,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651954554] [2022-07-21 10:41:47,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 10:41:47,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 10:41:47,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:41:47,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-21 10:41:47,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:41:47,673 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-21 10:41:47,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 10:41:47,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651954554] [2022-07-21 10:41:47,673 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651954554] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 10:41:47,673 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 10:41:47,674 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 10:41:47,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883512318] [2022-07-21 10:41:47,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 10:41:47,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 10:41:47,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 10:41:47,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 10:41:47,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 10:41:47,675 INFO L87 Difference]: Start difference. First operand 4611 states and 6564 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-21 10:41:53,353 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 10:41:55,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 10:41:55,268 INFO L93 Difference]: Finished difference Result 4898 states and 7118 transitions. [2022-07-21 10:41:55,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 10:41:55,269 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 37 [2022-07-21 10:41:55,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 10:41:55,298 INFO L225 Difference]: With dead ends: 4898 [2022-07-21 10:41:55,298 INFO L226 Difference]: Without dead ends: 4895 [2022-07-21 10:41:55,301 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 10:41:55,302 INFO L413 NwaCegarLoop]: 1599 mSDtfsCounter, 1890 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 1118 mSolverCounterSat, 537 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2075 SdHoareTripleChecker+Valid, 1776 SdHoareTripleChecker+Invalid, 1656 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 537 IncrementalHoareTripleChecker+Valid, 1118 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2022-07-21 10:41:55,302 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2075 Valid, 1776 Invalid, 1656 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [537 Valid, 1118 Invalid, 1 Unknown, 0 Unchecked, 7.4s Time] [2022-07-21 10:41:55,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4895 states. [2022-07-21 10:41:55,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4895 to 4610. [2022-07-21 10:41:55,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4610 states, 3206 states have (on average 1.348097317529632) internal successors, (4322), 3362 states have internal predecessors, (4322), 1121 states have call successors, (1121), 282 states have call predecessors, (1121), 282 states have return successors, (1119), 1090 states have call predecessors, (1119), 1115 states have call successors, (1119) [2022-07-21 10:41:55,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4610 states to 4610 states and 6562 transitions. [2022-07-21 10:41:55,456 INFO L78 Accepts]: Start accepts. Automaton has 4610 states and 6562 transitions. Word has length 37 [2022-07-21 10:41:55,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 10:41:55,457 INFO L495 AbstractCegarLoop]: Abstraction has 4610 states and 6562 transitions. [2022-07-21 10:41:55,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-21 10:41:55,457 INFO L276 IsEmpty]: Start isEmpty. Operand 4610 states and 6562 transitions. [2022-07-21 10:41:55,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-07-21 10:41:55,458 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 10:41:55,458 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] [2022-07-21 10:41:55,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-21 10:41:55,459 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 10:41:55,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 10:41:55,459 INFO L85 PathProgramCache]: Analyzing trace with hash 1921132624, now seen corresponding path program 1 times [2022-07-21 10:41:55,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 10:41:55,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943003596] [2022-07-21 10:41:55,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 10:41:55,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 10:41:55,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:41:55,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-21 10:41:55,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:41:55,568 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-21 10:41:55,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 10:41:55,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943003596] [2022-07-21 10:41:55,569 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943003596] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 10:41:55,569 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 10:41:55,569 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 10:41:55,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881558012] [2022-07-21 10:41:55,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 10:41:55,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 10:41:55,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 10:41:55,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 10:41:55,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 10:41:55,571 INFO L87 Difference]: Start difference. First operand 4610 states and 6562 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-21 10:42:00,177 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 10:42:02,836 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 10:42:05,585 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 10:42:05,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 10:42:05,764 INFO L93 Difference]: Finished difference Result 4897 states and 7116 transitions. [2022-07-21 10:42:05,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 10:42:05,764 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 38 [2022-07-21 10:42:05,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 10:42:05,782 INFO L225 Difference]: With dead ends: 4897 [2022-07-21 10:42:05,782 INFO L226 Difference]: Without dead ends: 4894 [2022-07-21 10:42:05,786 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 10:42:05,787 INFO L413 NwaCegarLoop]: 1597 mSDtfsCounter, 1886 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 1114 mSolverCounterSat, 534 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2073 SdHoareTripleChecker+Valid, 1773 SdHoareTripleChecker+Invalid, 1651 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 534 IncrementalHoareTripleChecker+Valid, 1114 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.0s IncrementalHoareTripleChecker+Time [2022-07-21 10:42:05,787 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2073 Valid, 1773 Invalid, 1651 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [534 Valid, 1114 Invalid, 3 Unknown, 0 Unchecked, 10.0s Time] [2022-07-21 10:42:05,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4894 states. [2022-07-21 10:42:05,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4894 to 4609. [2022-07-21 10:42:05,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4609 states, 3206 states have (on average 1.347785402370555) internal successors, (4321), 3361 states have internal predecessors, (4321), 1120 states have call successors, (1120), 282 states have call predecessors, (1120), 282 states have return successors, (1119), 1090 states have call predecessors, (1119), 1115 states have call successors, (1119) [2022-07-21 10:42:05,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4609 states to 4609 states and 6560 transitions. [2022-07-21 10:42:05,949 INFO L78 Accepts]: Start accepts. Automaton has 4609 states and 6560 transitions. Word has length 38 [2022-07-21 10:42:05,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 10:42:05,949 INFO L495 AbstractCegarLoop]: Abstraction has 4609 states and 6560 transitions. [2022-07-21 10:42:05,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-21 10:42:05,950 INFO L276 IsEmpty]: Start isEmpty. Operand 4609 states and 6560 transitions. [2022-07-21 10:42:05,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-07-21 10:42:05,950 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 10:42:05,951 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] [2022-07-21 10:42:05,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-21 10:42:05,951 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 10:42:05,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 10:42:05,951 INFO L85 PathProgramCache]: Analyzing trace with hash -575070255, now seen corresponding path program 1 times [2022-07-21 10:42:05,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 10:42:05,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932554235] [2022-07-21 10:42:05,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 10:42:05,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 10:42:06,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:42:06,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-21 10:42:06,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:42:06,106 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-21 10:42:06,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 10:42:06,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932554235] [2022-07-21 10:42:06,107 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932554235] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 10:42:06,108 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 10:42:06,108 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 10:42:06,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637210737] [2022-07-21 10:42:06,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 10:42:06,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 10:42:06,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 10:42:06,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 10:42:06,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 10:42:06,109 INFO L87 Difference]: Start difference. First operand 4609 states and 6560 transitions. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-21 10:42:10,379 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 10:42:14,090 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 10:42:14,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 10:42:14,313 INFO L93 Difference]: Finished difference Result 4896 states and 7114 transitions. [2022-07-21 10:42:14,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 10:42:14,314 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 39 [2022-07-21 10:42:14,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 10:42:14,362 INFO L225 Difference]: With dead ends: 4896 [2022-07-21 10:42:14,364 INFO L226 Difference]: Without dead ends: 4893 [2022-07-21 10:42:14,366 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 10:42:14,367 INFO L413 NwaCegarLoop]: 1603 mSDtfsCounter, 1883 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 1126 mSolverCounterSat, 535 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2061 SdHoareTripleChecker+Valid, 1778 SdHoareTripleChecker+Invalid, 1661 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 535 IncrementalHoareTripleChecker+Valid, 1126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2022-07-21 10:42:14,367 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2061 Valid, 1778 Invalid, 1661 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [535 Valid, 1126 Invalid, 0 Unknown, 0 Unchecked, 8.0s Time] [2022-07-21 10:42:14,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4893 states. [2022-07-21 10:42:14,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4893 to 4608. [2022-07-21 10:42:14,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4608 states, 3206 states have (on average 1.3474734872114784) internal successors, (4320), 3360 states have internal predecessors, (4320), 1119 states have call successors, (1119), 282 states have call predecessors, (1119), 282 states have return successors, (1119), 1090 states have call predecessors, (1119), 1115 states have call successors, (1119) [2022-07-21 10:42:14,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4608 states to 4608 states and 6558 transitions. [2022-07-21 10:42:14,515 INFO L78 Accepts]: Start accepts. Automaton has 4608 states and 6558 transitions. Word has length 39 [2022-07-21 10:42:14,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 10:42:14,516 INFO L495 AbstractCegarLoop]: Abstraction has 4608 states and 6558 transitions. [2022-07-21 10:42:14,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-21 10:42:14,516 INFO L276 IsEmpty]: Start isEmpty. Operand 4608 states and 6558 transitions. [2022-07-21 10:42:14,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-07-21 10:42:14,518 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 10:42:14,518 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] [2022-07-21 10:42:14,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-21 10:42:14,519 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 10:42:14,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 10:42:14,519 INFO L85 PathProgramCache]: Analyzing trace with hash -647943309, now seen corresponding path program 1 times [2022-07-21 10:42:14,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 10:42:14,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502059011] [2022-07-21 10:42:14,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 10:42:14,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 10:42:14,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:42:14,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-21 10:42:14,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:42:14,625 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-21 10:42:14,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 10:42:14,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502059011] [2022-07-21 10:42:14,626 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502059011] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 10:42:14,626 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 10:42:14,626 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 10:42:14,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253068398] [2022-07-21 10:42:14,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 10:42:14,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 10:42:14,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 10:42:14,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 10:42:14,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 10:42:14,628 INFO L87 Difference]: Start difference. First operand 4608 states and 6558 transitions. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-21 10:42:19,038 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.85s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 10:42:21,064 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 10:42:22,992 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 10:42:25,020 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 10:42:25,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 10:42:25,838 INFO L93 Difference]: Finished difference Result 4895 states and 7112 transitions. [2022-07-21 10:42:25,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 10:42:25,839 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 40 [2022-07-21 10:42:25,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 10:42:25,855 INFO L225 Difference]: With dead ends: 4895 [2022-07-21 10:42:25,855 INFO L226 Difference]: Without dead ends: 4892 [2022-07-21 10:42:25,858 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 10:42:25,859 INFO L413 NwaCegarLoop]: 1596 mSDtfsCounter, 1880 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 1119 mSolverCounterSat, 534 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2063 SdHoareTripleChecker+Valid, 1770 SdHoareTripleChecker+Invalid, 1655 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 534 IncrementalHoareTripleChecker+Valid, 1119 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.0s IncrementalHoareTripleChecker+Time [2022-07-21 10:42:25,859 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2063 Valid, 1770 Invalid, 1655 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [534 Valid, 1119 Invalid, 2 Unknown, 0 Unchecked, 11.0s Time] [2022-07-21 10:42:25,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4892 states. [2022-07-21 10:42:25,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4892 to 4607. [2022-07-21 10:42:26,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4607 states, 3206 states have (on average 1.3471615720524017) internal successors, (4319), 3359 states have internal predecessors, (4319), 1118 states have call successors, (1118), 282 states have call predecessors, (1118), 282 states have return successors, (1119), 1090 states have call predecessors, (1119), 1115 states have call successors, (1119) [2022-07-21 10:42:26,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4607 states to 4607 states and 6556 transitions. [2022-07-21 10:42:26,020 INFO L78 Accepts]: Start accepts. Automaton has 4607 states and 6556 transitions. Word has length 40 [2022-07-21 10:42:26,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 10:42:26,020 INFO L495 AbstractCegarLoop]: Abstraction has 4607 states and 6556 transitions. [2022-07-21 10:42:26,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-21 10:42:26,020 INFO L276 IsEmpty]: Start isEmpty. Operand 4607 states and 6556 transitions. [2022-07-21 10:42:26,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-07-21 10:42:26,021 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 10:42:26,022 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] [2022-07-21 10:42:26,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-21 10:42:26,022 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 10:42:26,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 10:42:26,022 INFO L85 PathProgramCache]: Analyzing trace with hash 1387964180, now seen corresponding path program 1 times [2022-07-21 10:42:26,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 10:42:26,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693204299] [2022-07-21 10:42:26,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 10:42:26,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 10:42:26,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:42:26,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-21 10:42:26,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:42:26,171 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-21 10:42:26,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 10:42:26,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693204299] [2022-07-21 10:42:26,171 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693204299] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 10:42:26,171 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 10:42:26,171 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 10:42:26,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626625511] [2022-07-21 10:42:26,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 10:42:26,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 10:42:26,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 10:42:26,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 10:42:26,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 10:42:26,173 INFO L87 Difference]: Start difference. First operand 4607 states and 6556 transitions. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-21 10:42:31,736 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.78s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 10:42:33,767 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 10:42:33,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 10:42:33,968 INFO L93 Difference]: Finished difference Result 4894 states and 7110 transitions. [2022-07-21 10:42:33,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 10:42:33,969 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 41 [2022-07-21 10:42:33,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 10:42:33,985 INFO L225 Difference]: With dead ends: 4894 [2022-07-21 10:42:33,985 INFO L226 Difference]: Without dead ends: 4891 [2022-07-21 10:42:33,988 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 10:42:33,989 INFO L413 NwaCegarLoop]: 1594 mSDtfsCounter, 1877 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 1120 mSolverCounterSat, 533 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2060 SdHoareTripleChecker+Valid, 1767 SdHoareTripleChecker+Invalid, 1654 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 533 IncrementalHoareTripleChecker+Valid, 1120 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2022-07-21 10:42:33,989 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2060 Valid, 1767 Invalid, 1654 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [533 Valid, 1120 Invalid, 1 Unknown, 0 Unchecked, 7.6s Time] [2022-07-21 10:42:33,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4891 states. [2022-07-21 10:42:34,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4891 to 4606. [2022-07-21 10:42:34,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4606 states, 3206 states have (on average 1.346849656893325) internal successors, (4318), 3358 states have internal predecessors, (4318), 1117 states have call successors, (1117), 282 states have call predecessors, (1117), 282 states have return successors, (1119), 1090 states have call predecessors, (1119), 1115 states have call successors, (1119) [2022-07-21 10:42:34,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4606 states to 4606 states and 6554 transitions. [2022-07-21 10:42:34,182 INFO L78 Accepts]: Start accepts. Automaton has 4606 states and 6554 transitions. Word has length 41 [2022-07-21 10:42:34,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 10:42:34,183 INFO L495 AbstractCegarLoop]: Abstraction has 4606 states and 6554 transitions. [2022-07-21 10:42:34,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-21 10:42:34,183 INFO L276 IsEmpty]: Start isEmpty. Operand 4606 states and 6554 transitions. [2022-07-21 10:42:34,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-07-21 10:42:34,184 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 10:42:34,184 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] [2022-07-21 10:42:34,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-21 10:42:34,185 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 10:42:34,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 10:42:34,185 INFO L85 PathProgramCache]: Analyzing trace with hash 76591766, now seen corresponding path program 1 times [2022-07-21 10:42:34,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 10:42:34,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780673346] [2022-07-21 10:42:34,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 10:42:34,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 10:42:34,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:42:34,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-21 10:42:34,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:42:34,281 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-21 10:42:34,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 10:42:34,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780673346] [2022-07-21 10:42:34,282 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780673346] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 10:42:34,282 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 10:42:34,282 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 10:42:34,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888776454] [2022-07-21 10:42:34,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 10:42:34,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 10:42:34,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 10:42:34,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 10:42:34,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 10:42:34,284 INFO L87 Difference]: Start difference. First operand 4606 states and 6554 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-21 10:42:40,081 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 10:42:41,696 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 10:42:42,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 10:42:42,467 INFO L93 Difference]: Finished difference Result 4893 states and 7108 transitions. [2022-07-21 10:42:42,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 10:42:42,467 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 42 [2022-07-21 10:42:42,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 10:42:42,486 INFO L225 Difference]: With dead ends: 4893 [2022-07-21 10:42:42,486 INFO L226 Difference]: Without dead ends: 4862 [2022-07-21 10:42:42,492 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 10:42:42,493 INFO L413 NwaCegarLoop]: 1589 mSDtfsCounter, 1875 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 1115 mSolverCounterSat, 532 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2061 SdHoareTripleChecker+Valid, 1762 SdHoareTripleChecker+Invalid, 1648 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 532 IncrementalHoareTripleChecker+Valid, 1115 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2022-07-21 10:42:42,493 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2061 Valid, 1762 Invalid, 1648 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [532 Valid, 1115 Invalid, 1 Unknown, 0 Unchecked, 8.0s Time] [2022-07-21 10:42:42,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4862 states. [2022-07-21 10:42:42,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4862 to 4577. [2022-07-21 10:42:42,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4577 states, 3183 states have (on average 1.347785108388313) internal successors, (4290), 3334 states have internal predecessors, (4290), 1112 states have call successors, (1112), 281 states have call predecessors, (1112), 281 states have return successors, (1115), 1086 states have call predecessors, (1115), 1111 states have call successors, (1115) [2022-07-21 10:42:42,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4577 states to 4577 states and 6517 transitions. [2022-07-21 10:42:42,672 INFO L78 Accepts]: Start accepts. Automaton has 4577 states and 6517 transitions. Word has length 42 [2022-07-21 10:42:42,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 10:42:42,673 INFO L495 AbstractCegarLoop]: Abstraction has 4577 states and 6517 transitions. [2022-07-21 10:42:42,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-21 10:42:42,673 INFO L276 IsEmpty]: Start isEmpty. Operand 4577 states and 6517 transitions. [2022-07-21 10:42:42,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-07-21 10:42:42,678 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 10:42:42,678 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 10:42:42,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-21 10:42:42,679 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 10:42:42,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 10:42:42,679 INFO L85 PathProgramCache]: Analyzing trace with hash -1939635492, now seen corresponding path program 1 times [2022-07-21 10:42:42,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 10:42:42,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696660982] [2022-07-21 10:42:42,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 10:42:42,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 10:42:42,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:42:42,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 10:42:42,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:42:42,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 10:42:42,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:42:42,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-21 10:42:42,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:42:42,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-21 10:42:42,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:42:42,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 10:42:42,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:42:42,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 10:42:42,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:42:42,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-21 10:42:42,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:42:42,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-21 10:42:42,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:42:42,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-21 10:42:42,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:42:42,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-21 10:42:42,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:42:42,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-21 10:42:42,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:42:42,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-21 10:42:42,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:42:42,895 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-21 10:42:42,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 10:42:42,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696660982] [2022-07-21 10:42:42,896 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696660982] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 10:42:42,896 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 10:42:42,896 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-21 10:42:42,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092346236] [2022-07-21 10:42:42,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 10:42:42,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 10:42:42,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 10:42:42,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 10:42:42,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-07-21 10:42:42,898 INFO L87 Difference]: Start difference. First operand 4577 states and 6517 transitions. Second operand has 8 states, 8 states have (on average 10.625) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (20), 7 states have call predecessors, (20), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-21 10:42:50,867 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 10:42:54,223 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 10:42:56,775 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 10:42:58,545 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 10:42:59,974 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 10:43:02,001 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 10:43:04,034 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 10:43:04,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 10:43:04,218 INFO L93 Difference]: Finished difference Result 8505 states and 12595 transitions. [2022-07-21 10:43:04,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-21 10:43:04,218 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (20), 7 states have call predecessors, (20), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 119 [2022-07-21 10:43:04,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 10:43:04,230 INFO L225 Difference]: With dead ends: 8505 [2022-07-21 10:43:04,230 INFO L226 Difference]: Without dead ends: 3931 [2022-07-21 10:43:04,244 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2022-07-21 10:43:04,245 INFO L413 NwaCegarLoop]: 1625 mSDtfsCounter, 2244 mSDsluCounter, 3672 mSDsCounter, 0 mSdLazyCounter, 3612 mSolverCounterSat, 1796 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2476 SdHoareTripleChecker+Valid, 5297 SdHoareTripleChecker+Invalid, 5412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1796 IncrementalHoareTripleChecker+Valid, 3612 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.0s IncrementalHoareTripleChecker+Time [2022-07-21 10:43:04,245 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2476 Valid, 5297 Invalid, 5412 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1796 Valid, 3612 Invalid, 4 Unknown, 0 Unchecked, 21.0s Time] [2022-07-21 10:43:04,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3931 states. [2022-07-21 10:43:04,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3931 to 2780. [2022-07-21 10:43:04,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2780 states, 1987 states have (on average 1.3714141922496226) internal successors, (2725), 2070 states have internal predecessors, (2725), 623 states have call successors, (623), 163 states have call predecessors, (623), 169 states have return successors, (650), 614 states have call predecessors, (650), 622 states have call successors, (650) [2022-07-21 10:43:04,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2780 states to 2780 states and 3998 transitions. [2022-07-21 10:43:04,362 INFO L78 Accepts]: Start accepts. Automaton has 2780 states and 3998 transitions. Word has length 119 [2022-07-21 10:43:04,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 10:43:04,362 INFO L495 AbstractCegarLoop]: Abstraction has 2780 states and 3998 transitions. [2022-07-21 10:43:04,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (20), 7 states have call predecessors, (20), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-21 10:43:04,363 INFO L276 IsEmpty]: Start isEmpty. Operand 2780 states and 3998 transitions. [2022-07-21 10:43:04,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-07-21 10:43:04,367 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 10:43:04,367 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-21 10:43:04,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-21 10:43:04,368 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 10:43:04,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 10:43:04,368 INFO L85 PathProgramCache]: Analyzing trace with hash 1267868885, now seen corresponding path program 1 times [2022-07-21 10:43:04,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 10:43:04,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413228912] [2022-07-21 10:43:04,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 10:43:04,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 10:43:04,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:43:04,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-21 10:43:04,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:43:04,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-21 10:43:04,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:43:04,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 10:43:04,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:43:04,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-21 10:43:04,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:43:04,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-21 10:43:04,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:43:04,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 10:43:04,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:43:04,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 10:43:04,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:43:04,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-21 10:43:04,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:43:04,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-21 10:43:04,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:43:04,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-21 10:43:04,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:43:04,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-21 10:43:04,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:43:04,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-07-21 10:43:04,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:43:04,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-21 10:43:04,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:43:04,677 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-21 10:43:04,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 10:43:04,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413228912] [2022-07-21 10:43:04,678 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413228912] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 10:43:04,678 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 10:43:04,678 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-21 10:43:04,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102347633] [2022-07-21 10:43:04,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 10:43:04,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 10:43:04,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 10:43:04,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 10:43:04,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-07-21 10:43:04,679 INFO L87 Difference]: Start difference. First operand 2780 states and 3998 transitions. Second operand has 9 states, 9 states have (on average 11.222222222222221) internal successors, (101), 3 states have internal predecessors, (101), 3 states have call successors, (21), 9 states have call predecessors, (21), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-21 10:43:13,675 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.77s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 10:43:15,703 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 10:43:16,887 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 10:43:18,558 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 10:43:20,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 10:43:20,074 INFO L93 Difference]: Finished difference Result 3882 states and 6023 transitions. [2022-07-21 10:43:20,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-21 10:43:20,081 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.222222222222221) internal successors, (101), 3 states have internal predecessors, (101), 3 states have call successors, (21), 9 states have call predecessors, (21), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 138 [2022-07-21 10:43:20,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 10:43:20,082 INFO L225 Difference]: With dead ends: 3882 [2022-07-21 10:43:20,083 INFO L226 Difference]: Without dead ends: 0 [2022-07-21 10:43:20,096 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2022-07-21 10:43:20,097 INFO L413 NwaCegarLoop]: 1607 mSDtfsCounter, 2026 mSDsluCounter, 2822 mSDsCounter, 0 mSdLazyCounter, 4365 mSolverCounterSat, 1747 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2208 SdHoareTripleChecker+Valid, 4429 SdHoareTripleChecker+Invalid, 6113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1747 IncrementalHoareTripleChecker+Valid, 4365 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.1s IncrementalHoareTripleChecker+Time [2022-07-21 10:43:20,097 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2208 Valid, 4429 Invalid, 6113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1747 Valid, 4365 Invalid, 1 Unknown, 0 Unchecked, 15.1s Time] [2022-07-21 10:43:20,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-07-21 10:43:20,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-07-21 10:43:20,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 10:43:20,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-07-21 10:43:20,098 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 138 [2022-07-21 10:43:20,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 10:43:20,098 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-21 10:43:20,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.222222222222221) internal successors, (101), 3 states have internal predecessors, (101), 3 states have call successors, (21), 9 states have call predecessors, (21), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-21 10:43:20,099 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-07-21 10:43:20,099 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-07-21 10:43:20,101 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-21 10:43:20,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-21 10:43:20,103 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.