./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.7.3/main0_drivers-vhost-tcm_vhost-ko--32_7a--linux-3.7.3.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ae007674 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-linux-3.7.3/main0_drivers-vhost-tcm_vhost-ko--32_7a--linux-3.7.3.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 3d776a54fbebbd358d59ab0126298feae1e40360b6fb5e6158cd54ba5ef877f7 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ae00767 [2021-12-28 03:39:31,025 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-28 03:39:31,026 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-28 03:39:31,058 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-28 03:39:31,059 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-28 03:39:31,062 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-28 03:39:31,064 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-28 03:39:31,068 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-28 03:39:31,070 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-28 03:39:31,074 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-28 03:39:31,074 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-28 03:39:31,076 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-28 03:39:31,076 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-28 03:39:31,078 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-28 03:39:31,079 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-28 03:39:31,080 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-28 03:39:31,081 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-28 03:39:31,081 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-28 03:39:31,083 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-28 03:39:31,086 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-28 03:39:31,089 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-28 03:39:31,092 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-28 03:39:31,092 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-28 03:39:31,094 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-28 03:39:31,096 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-28 03:39:31,097 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-28 03:39:31,097 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-28 03:39:31,098 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-28 03:39:31,099 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-28 03:39:31,099 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-28 03:39:31,099 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-28 03:39:31,100 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-28 03:39:31,101 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-28 03:39:31,101 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-28 03:39:31,102 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-28 03:39:31,102 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-28 03:39:31,103 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-28 03:39:31,103 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-28 03:39:31,103 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-28 03:39:31,104 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-28 03:39:31,105 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-28 03:39:31,105 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-28 03:39:31,127 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-28 03:39:31,128 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-28 03:39:31,128 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-28 03:39:31,129 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-28 03:39:31,129 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-28 03:39:31,129 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-28 03:39:31,130 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-28 03:39:31,130 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-28 03:39:31,131 INFO L138 SettingsManager]: * Use SBE=true [2021-12-28 03:39:31,131 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-28 03:39:31,131 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-28 03:39:31,132 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-28 03:39:31,132 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-28 03:39:31,132 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-28 03:39:31,132 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-28 03:39:31,132 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-28 03:39:31,132 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-28 03:39:31,133 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-28 03:39:31,133 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-28 03:39:31,133 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-28 03:39:31,133 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-28 03:39:31,133 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 03:39:31,133 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-28 03:39:31,133 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-28 03:39:31,134 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-28 03:39:31,134 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-28 03:39:31,134 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-28 03:39:31,134 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-28 03:39:31,134 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-28 03:39:31,134 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-28 03:39:31,134 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3d776a54fbebbd358d59ab0126298feae1e40360b6fb5e6158cd54ba5ef877f7 [2021-12-28 03:39:31,380 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-28 03:39:31,402 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-28 03:39:31,404 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-28 03:39:31,405 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-28 03:39:31,405 INFO L275 PluginConnector]: CDTParser initialized [2021-12-28 03:39:31,407 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.7.3/main0_drivers-vhost-tcm_vhost-ko--32_7a--linux-3.7.3.i [2021-12-28 03:39:31,476 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2363b13e2/86237c6ba5cf41ff83568f4de0298d99/FLAGf27d6e4c0 [2021-12-28 03:39:32,167 INFO L306 CDTParser]: Found 1 translation units. [2021-12-28 03:39:32,168 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.7.3/main0_drivers-vhost-tcm_vhost-ko--32_7a--linux-3.7.3.i [2021-12-28 03:39:32,206 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2363b13e2/86237c6ba5cf41ff83568f4de0298d99/FLAGf27d6e4c0 [2021-12-28 03:39:32,266 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2363b13e2/86237c6ba5cf41ff83568f4de0298d99 [2021-12-28 03:39:32,270 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-28 03:39:32,271 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-28 03:39:32,272 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-28 03:39:32,272 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-28 03:39:32,274 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-28 03:39:32,275 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 03:39:32" (1/1) ... [2021-12-28 03:39:32,276 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b36db59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:39:32, skipping insertion in model container [2021-12-28 03:39:32,277 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 03:39:32" (1/1) ... [2021-12-28 03:39:32,281 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-28 03:39:32,425 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-28 03:39:34,387 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-linux-3.7.3/main0_drivers-vhost-tcm_vhost-ko--32_7a--linux-3.7.3.i[462796,462809] [2021-12-28 03:39:34,497 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 03:39:34,513 INFO L203 MainTranslator]: Completed pre-run [2021-12-28 03:39:34,878 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-linux-3.7.3/main0_drivers-vhost-tcm_vhost-ko--32_7a--linux-3.7.3.i[462796,462809] [2021-12-28 03:39:34,890 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 03:39:35,007 INFO L208 MainTranslator]: Completed translation [2021-12-28 03:39:35,007 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:39:35 WrapperNode [2021-12-28 03:39:35,008 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-28 03:39:35,009 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-28 03:39:35,010 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-28 03:39:35,010 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-28 03:39:35,014 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:39:35" (1/1) ... [2021-12-28 03:39:35,111 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:39:35" (1/1) ... [2021-12-28 03:39:35,267 INFO L137 Inliner]: procedures = 445, calls = 3482, calls flagged for inlining = 226, calls inlined = 196, statements flattened = 7782 [2021-12-28 03:39:35,267 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-28 03:39:35,268 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-28 03:39:35,268 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-28 03:39:35,268 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-28 03:39:35,273 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:39:35" (1/1) ... [2021-12-28 03:39:35,274 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:39:35" (1/1) ... [2021-12-28 03:39:35,293 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:39:35" (1/1) ... [2021-12-28 03:39:35,293 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:39:35" (1/1) ... [2021-12-28 03:39:35,423 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:39:35" (1/1) ... [2021-12-28 03:39:35,447 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:39:35" (1/1) ... [2021-12-28 03:39:35,505 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:39:35" (1/1) ... [2021-12-28 03:39:35,601 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-28 03:39:35,603 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-28 03:39:35,603 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-28 03:39:35,603 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-28 03:39:35,604 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:39:35" (1/1) ... [2021-12-28 03:39:35,609 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 03:39:35,617 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:39:35,628 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) [2021-12-28 03:39:35,636 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 [2021-12-28 03:39:35,670 INFO L130 BoogieDeclarations]: Found specification of procedure vq_access_ok [2021-12-28 03:39:35,671 INFO L138 BoogieDeclarations]: Found implementation of procedure vq_access_ok [2021-12-28 03:39:35,671 INFO L130 BoogieDeclarations]: Found specification of procedure wake_up_process [2021-12-28 03:39:35,671 INFO L138 BoogieDeclarations]: Found implementation of procedure wake_up_process [2021-12-28 03:39:35,671 INFO L130 BoogieDeclarations]: Found specification of procedure debug_lockdep_rcu_enabled [2021-12-28 03:39:35,672 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_lockdep_rcu_enabled [2021-12-28 03:39:35,672 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-28 03:39:35,672 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-28 03:39:35,672 INFO L130 BoogieDeclarations]: Found specification of procedure __put_user_bad [2021-12-28 03:39:35,672 INFO L130 BoogieDeclarations]: Found specification of procedure tcm_vhost_release_fabric_acl [2021-12-28 03:39:35,672 INFO L138 BoogieDeclarations]: Found implementation of procedure tcm_vhost_release_fabric_acl [2021-12-28 03:39:35,672 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-12-28 03:39:35,672 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-12-28 03:39:35,673 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_vq_access_ok [2021-12-28 03:39:35,673 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_vq_access_ok [2021-12-28 03:39:35,673 INFO L130 BoogieDeclarations]: Found specification of procedure tcm_vhost_close_session [2021-12-28 03:39:35,673 INFO L138 BoogieDeclarations]: Found implementation of procedure tcm_vhost_close_session [2021-12-28 03:39:35,673 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2021-12-28 03:39:35,673 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_work_queue [2021-12-28 03:39:35,673 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_work_queue [2021-12-28 03:39:35,673 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-28 03:39:35,674 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_tcm_vhost_mutex [2021-12-28 03:39:35,674 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_tcm_vhost_mutex [2021-12-28 03:39:35,674 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2021-12-28 03:39:35,674 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2021-12-28 03:39:35,674 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-12-28 03:39:35,674 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-12-28 03:39:35,674 INFO L130 BoogieDeclarations]: Found specification of procedure fput [2021-12-28 03:39:35,674 INFO L138 BoogieDeclarations]: Found implementation of procedure fput [2021-12-28 03:39:35,675 INFO L130 BoogieDeclarations]: Found specification of procedure next_desc [2021-12-28 03:39:35,675 INFO L138 BoogieDeclarations]: Found implementation of procedure next_desc [2021-12-28 03:39:35,675 INFO L130 BoogieDeclarations]: Found specification of procedure tcm_vhost_drop_tpg [2021-12-28 03:39:35,675 INFO L138 BoogieDeclarations]: Found implementation of procedure tcm_vhost_drop_tpg [2021-12-28 03:39:35,676 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_bh [2021-12-28 03:39:35,676 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_bh [2021-12-28 03:39:35,695 INFO L130 BoogieDeclarations]: Found specification of procedure schedule [2021-12-28 03:39:35,695 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule [2021-12-28 03:39:35,695 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_scsi_open [2021-12-28 03:39:35,695 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_scsi_open [2021-12-28 03:39:35,695 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-28 03:39:35,695 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2021-12-28 03:39:35,696 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2021-12-28 03:39:35,696 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_has_feature [2021-12-28 03:39:35,696 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_has_feature [2021-12-28 03:39:35,696 INFO L130 BoogieDeclarations]: Found specification of procedure sg_page [2021-12-28 03:39:35,696 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_page [2021-12-28 03:39:35,696 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-12-28 03:39:35,696 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-12-28 03:39:35,696 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-28 03:39:35,696 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-28 03:39:35,696 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-12-28 03:39:35,696 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-12-28 03:39:35,696 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_work_init [2021-12-28 03:39:35,696 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_work_init [2021-12-28 03:39:35,696 INFO L130 BoogieDeclarations]: Found specification of procedure __get_user_bad [2021-12-28 03:39:35,697 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2021-12-28 03:39:35,697 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2021-12-28 03:39:35,697 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_scsi_complete_cmd [2021-12-28 03:39:35,697 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_scsi_complete_cmd [2021-12-28 03:39:35,697 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2021-12-28 03:39:35,697 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2021-12-28 03:39:35,697 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_mutex [2021-12-28 03:39:35,697 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_mutex [2021-12-28 03:39:35,697 INFO L130 BoogieDeclarations]: Found specification of procedure translate_desc [2021-12-28 03:39:35,697 INFO L138 BoogieDeclarations]: Found implementation of procedure translate_desc [2021-12-28 03:39:35,697 INFO L130 BoogieDeclarations]: Found specification of procedure eventfd_ctx_put [2021-12-28 03:39:35,697 INFO L138 BoogieDeclarations]: Found implementation of procedure eventfd_ctx_put [2021-12-28 03:39:35,697 INFO L130 BoogieDeclarations]: Found specification of procedure kref_put [2021-12-28 03:39:35,697 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_put [2021-12-28 03:39:35,697 INFO L130 BoogieDeclarations]: Found specification of procedure sas_get_pr_transport_id [2021-12-28 03:39:35,698 INFO L138 BoogieDeclarations]: Found implementation of procedure sas_get_pr_transport_id [2021-12-28 03:39:35,698 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_tv_tpg_mutex [2021-12-28 03:39:35,698 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_tv_tpg_mutex [2021-12-28 03:39:35,698 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-28 03:39:35,698 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-28 03:39:35,698 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-28 03:39:35,698 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-12-28 03:39:35,698 INFO L130 BoogieDeclarations]: Found specification of procedure kthread_stop [2021-12-28 03:39:35,698 INFO L138 BoogieDeclarations]: Found implementation of procedure kthread_stop [2021-12-28 03:39:35,698 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-12-28 03:39:35,698 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-12-28 03:39:35,698 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2021-12-28 03:39:35,698 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2021-12-28 03:39:35,698 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_work_seq_done [2021-12-28 03:39:35,698 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_work_seq_done [2021-12-28 03:39:35,699 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_disable_notify [2021-12-28 03:39:35,699 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_disable_notify [2021-12-28 03:39:35,699 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-12-28 03:39:35,699 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-12-28 03:39:35,699 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_update_used_flags [2021-12-28 03:39:35,699 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_update_used_flags [2021-12-28 03:39:35,699 INFO L130 BoogieDeclarations]: Found specification of procedure __copy_from_user [2021-12-28 03:39:35,699 INFO L138 BoogieDeclarations]: Found implementation of procedure __copy_from_user [2021-12-28 03:39:35,699 INFO L130 BoogieDeclarations]: Found specification of procedure lock_is_held [2021-12-28 03:39:35,699 INFO L138 BoogieDeclarations]: Found implementation of procedure lock_is_held [2021-12-28 03:39:35,699 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_mutex [2021-12-28 03:39:35,699 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_mutex [2021-12-28 03:39:35,699 INFO L130 BoogieDeclarations]: Found specification of procedure log_access_ok [2021-12-28 03:39:35,699 INFO L138 BoogieDeclarations]: Found implementation of procedure log_access_ok [2021-12-28 03:39:35,700 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2021-12-28 03:39:35,700 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2021-12-28 03:39:35,700 INFO L130 BoogieDeclarations]: Found specification of procedure tcm_vhost_alloc_fabric_acl [2021-12-28 03:39:35,700 INFO L138 BoogieDeclarations]: Found implementation of procedure tcm_vhost_alloc_fabric_acl [2021-12-28 03:39:35,700 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_tcm_vhost_mutex [2021-12-28 03:39:35,700 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_tcm_vhost_mutex [2021-12-28 03:39:35,700 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_scsi_ioctl [2021-12-28 03:39:35,700 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_scsi_ioctl [2021-12-28 03:39:35,700 INFO L130 BoogieDeclarations]: Found specification of procedure finish_wait [2021-12-28 03:39:35,700 INFO L138 BoogieDeclarations]: Found implementation of procedure finish_wait [2021-12-28 03:39:35,700 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-28 03:39:35,702 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-28 03:39:35,702 INFO L130 BoogieDeclarations]: Found specification of procedure tcm_vhost_drop_tport [2021-12-28 03:39:35,702 INFO L138 BoogieDeclarations]: Found implementation of procedure tcm_vhost_drop_tport [2021-12-28 03:39:35,702 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_bh [2021-12-28 03:39:35,702 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_bh [2021-12-28 03:39:35,702 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-12-28 03:39:35,703 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-12-28 03:39:35,703 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_vq_free_iovecs [2021-12-28 03:39:35,703 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_vq_free_iovecs [2021-12-28 03:39:35,704 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-28 03:39:35,705 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_work_flush [2021-12-28 03:39:35,706 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_work_flush [2021-12-28 03:39:35,706 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-28 03:39:35,706 INFO L130 BoogieDeclarations]: Found specification of procedure log_write [2021-12-28 03:39:35,706 INFO L138 BoogieDeclarations]: Found implementation of procedure log_write [2021-12-28 03:39:35,714 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2021-12-28 03:39:35,714 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2021-12-28 03:39:35,715 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_vq_reset [2021-12-28 03:39:35,715 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_vq_reset [2021-12-28 03:39:35,719 INFO L130 BoogieDeclarations]: Found specification of procedure destroy_workqueue [2021-12-28 03:39:35,720 INFO L138 BoogieDeclarations]: Found implementation of procedure destroy_workqueue [2021-12-28 03:39:35,720 INFO L130 BoogieDeclarations]: Found specification of procedure vq_log_access_ok [2021-12-28 03:39:35,720 INFO L138 BoogieDeclarations]: Found implementation of procedure vq_log_access_ok [2021-12-28 03:39:35,720 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-12-28 03:39:35,720 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-12-28 03:39:35,720 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-28 03:39:35,721 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-28 03:39:35,721 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2021-12-28 03:39:35,721 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2021-12-28 03:39:35,721 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_poll_queue [2021-12-28 03:39:35,721 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_poll_queue [2021-12-28 03:39:35,721 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2021-12-28 03:39:35,721 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2021-12-28 03:39:35,721 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2021-12-28 03:39:35,722 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2021-12-28 03:39:35,722 INFO L130 BoogieDeclarations]: Found specification of procedure eventfd_fget [2021-12-28 03:39:35,722 INFO L138 BoogieDeclarations]: Found implementation of procedure eventfd_fget [2021-12-28 03:39:35,722 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-28 03:39:35,722 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-12-28 03:39:35,722 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-12-28 03:39:35,722 INFO L130 BoogieDeclarations]: Found specification of procedure vq_memory_access_ok [2021-12-28 03:39:35,722 INFO L138 BoogieDeclarations]: Found implementation of procedure vq_memory_access_ok [2021-12-28 03:39:35,722 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-28 03:39:35,723 INFO L130 BoogieDeclarations]: Found specification of procedure put_page [2021-12-28 03:39:35,723 INFO L138 BoogieDeclarations]: Found implementation of procedure put_page [2021-12-28 03:39:35,723 INFO L130 BoogieDeclarations]: Found specification of procedure tcm_vhost_release_cmd [2021-12-28 03:39:35,723 INFO L138 BoogieDeclarations]: Found implementation of procedure tcm_vhost_release_cmd [2021-12-28 03:39:35,724 INFO L130 BoogieDeclarations]: Found specification of procedure tcm_vhost_set_default_node_attrs [2021-12-28 03:39:35,724 INFO L138 BoogieDeclarations]: Found implementation of procedure tcm_vhost_set_default_node_attrs [2021-12-28 03:39:35,724 INFO L130 BoogieDeclarations]: Found specification of procedure tcm_vhost_drop_nexus [2021-12-28 03:39:35,724 INFO L138 BoogieDeclarations]: Found implementation of procedure tcm_vhost_drop_nexus [2021-12-28 03:39:35,724 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-28 03:39:35,724 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_dev_cleanup [2021-12-28 03:39:35,724 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_dev_cleanup [2021-12-28 03:39:35,724 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2021-12-28 03:39:35,724 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2021-12-28 03:39:35,725 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_tv_tpg_mutex [2021-12-28 03:39:35,725 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_tv_tpg_mutex [2021-12-28 03:39:35,725 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2021-12-28 03:39:35,725 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2021-12-28 03:39:35,725 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-12-28 03:39:35,725 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-12-28 03:39:35,725 INFO L130 BoogieDeclarations]: Found specification of procedure sas_get_fabric_proto_ident [2021-12-28 03:39:35,725 INFO L138 BoogieDeclarations]: Found implementation of procedure sas_get_fabric_proto_ident [2021-12-28 03:39:35,726 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_handler_precall [2021-12-28 03:39:35,726 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_handler_precall [2021-12-28 03:39:35,726 INFO L130 BoogieDeclarations]: Found specification of procedure get_user_pages_fast [2021-12-28 03:39:35,726 INFO L138 BoogieDeclarations]: Found implementation of procedure get_user_pages_fast [2021-12-28 03:39:35,726 INFO L130 BoogieDeclarations]: Found specification of procedure transport_generic_free_cmd [2021-12-28 03:39:35,726 INFO L138 BoogieDeclarations]: Found implementation of procedure transport_generic_free_cmd [2021-12-28 03:39:35,726 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_scsi_deregister [2021-12-28 03:39:35,726 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_scsi_deregister [2021-12-28 03:39:35,726 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2021-12-28 03:39:35,727 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2021-12-28 03:39:35,727 INFO L130 BoogieDeclarations]: Found specification of procedure __rcu_read_lock [2021-12-28 03:39:35,727 INFO L138 BoogieDeclarations]: Found implementation of procedure __rcu_read_lock [2021-12-28 03:39:35,727 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_command_size [2021-12-28 03:39:35,727 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_command_size [2021-12-28 03:39:35,727 INFO L130 BoogieDeclarations]: Found specification of procedure tcm_vhost_dump_proto_id [2021-12-28 03:39:35,727 INFO L138 BoogieDeclarations]: Found implementation of procedure tcm_vhost_dump_proto_id [2021-12-28 03:39:35,727 INFO L130 BoogieDeclarations]: Found specification of procedure eventfd_ctx_fileget [2021-12-28 03:39:35,727 INFO L138 BoogieDeclarations]: Found implementation of procedure eventfd_ctx_fileget [2021-12-28 03:39:35,728 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-12-28 03:39:35,728 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-12-28 03:39:35,728 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-28 03:39:35,728 INFO L130 BoogieDeclarations]: Found specification of procedure __rcu_read_unlock [2021-12-28 03:39:35,728 INFO L138 BoogieDeclarations]: Found implementation of procedure __rcu_read_unlock [2021-12-28 03:39:35,728 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_scsi_clear_endpoint [2021-12-28 03:39:35,728 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_scsi_clear_endpoint [2021-12-28 03:39:35,728 INFO L130 BoogieDeclarations]: Found specification of procedure mmput [2021-12-28 03:39:35,728 INFO L138 BoogieDeclarations]: Found implementation of procedure mmput [2021-12-28 03:39:35,729 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2021-12-28 03:39:35,729 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2021-12-28 03:39:35,729 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-28 03:39:35,729 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-28 03:39:35,729 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_scsi_flush_vq [2021-12-28 03:39:35,729 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_scsi_flush_vq [2021-12-28 03:39:35,729 INFO L130 BoogieDeclarations]: Found specification of procedure copy_user_generic [2021-12-28 03:39:35,729 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_user_generic [2021-12-28 03:39:35,729 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_is_cpu_idle [2021-12-28 03:39:35,730 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_is_cpu_idle [2021-12-28 03:39:35,730 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2021-12-28 03:39:35,730 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2021-12-28 03:39:35,730 INFO L130 BoogieDeclarations]: Found specification of procedure sas_parse_pr_out_transport_id [2021-12-28 03:39:35,730 INFO L138 BoogieDeclarations]: Found implementation of procedure sas_parse_pr_out_transport_id [2021-12-28 03:39:35,730 INFO L130 BoogieDeclarations]: Found specification of procedure eventfd_signal [2021-12-28 03:39:35,730 INFO L138 BoogieDeclarations]: Found implementation of procedure eventfd_signal [2021-12-28 03:39:35,730 INFO L130 BoogieDeclarations]: Found specification of procedure utsname [2021-12-28 03:39:35,731 INFO L138 BoogieDeclarations]: Found implementation of procedure utsname [2021-12-28 03:39:35,731 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_poll_stop [2021-12-28 03:39:35,731 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_poll_stop [2021-12-28 03:39:35,731 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_rcu_suspicious [2021-12-28 03:39:35,731 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_rcu_suspicious [2021-12-28 03:39:35,731 INFO L130 BoogieDeclarations]: Found specification of procedure memory_access_ok [2021-12-28 03:39:35,731 INFO L138 BoogieDeclarations]: Found implementation of procedure memory_access_ok [2021-12-28 03:39:35,731 INFO L130 BoogieDeclarations]: Found specification of procedure current_thread_info [2021-12-28 03:39:35,731 INFO L138 BoogieDeclarations]: Found implementation of procedure current_thread_info [2021-12-28 03:39:35,732 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_add_used [2021-12-28 03:39:35,732 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_add_used [2021-12-28 03:39:35,732 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2021-12-28 03:39:35,733 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2021-12-28 03:39:35,733 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2021-12-28 03:39:35,733 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2021-12-28 03:39:35,733 INFO L130 BoogieDeclarations]: Found specification of procedure prepare_to_wait [2021-12-28 03:39:35,733 INFO L138 BoogieDeclarations]: Found implementation of procedure prepare_to_wait [2021-12-28 03:39:35,733 INFO L130 BoogieDeclarations]: Found specification of procedure tcm_vhost_drop_nodeacl [2021-12-28 03:39:35,733 INFO L138 BoogieDeclarations]: Found implementation of procedure tcm_vhost_drop_nodeacl [2021-12-28 03:39:35,733 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_poll_flush [2021-12-28 03:39:35,733 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_poll_flush [2021-12-28 03:39:35,734 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_scsi_release [2021-12-28 03:39:35,734 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_scsi_release [2021-12-28 03:39:35,734 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_signal [2021-12-28 03:39:35,734 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_signal [2021-12-28 03:39:35,734 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-28 03:39:35,734 INFO L130 BoogieDeclarations]: Found specification of procedure sas_get_pr_transport_id_len [2021-12-28 03:39:35,734 INFO L138 BoogieDeclarations]: Found implementation of procedure sas_get_pr_transport_id_len [2021-12-28 03:39:35,735 INFO L130 BoogieDeclarations]: Found specification of procedure tcm_vhost_port_link [2021-12-28 03:39:35,737 INFO L138 BoogieDeclarations]: Found implementation of procedure tcm_vhost_port_link [2021-12-28 03:39:36,485 INFO L234 CfgBuilder]: Building ICFG [2021-12-28 03:39:36,490 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-28 03:39:43,084 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L7455: assume #t~switch208;#res := ~ret~1; [2021-12-28 03:39:43,084 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L7455: assume !#t~switch208;#t~switch208 := #t~switch208 || 4 == ~size; [2021-12-28 03:39:43,085 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L7488: assume 0 != ~tmp___1~4;#res := ~ret~1; [2021-12-28 03:39:43,085 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L7488: assume !(0 != ~tmp___1~4);#res := ~ret~1; [2021-12-28 03:39:43,085 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L7449: havoc #t~switch208; [2021-12-28 03:39:43,085 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L7474: SUMMARY for call #t~ret209 := ldv__builtin_expect((if 0 != ~ret~1 then 1 else 0), 0); srcloc: null [2021-12-28 03:39:43,085 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L7470: assume #t~switch208; [2021-12-28 03:39:43,085 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L7470: assume !#t~switch208;#t~switch208 := #t~switch208 || 16 == ~size; [2021-12-28 03:39:43,085 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L7474-1: assume -9223372036854775808 <= #t~ret209 && #t~ret209 <= 9223372036854775807;~tmp___0~9 := #t~ret209;havoc #t~ret209; [2021-12-28 03:39:43,085 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##1: assume #t~switch208;#res := ~ret~1; [2021-12-28 03:39:43,085 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L7497-1: ~tmp___2~3 := #t~ret211;havoc #t~ret211;#res := (if ~tmp___2~3 % 18446744073709551616 % 4294967296 <= 2147483647 then ~tmp___2~3 % 18446744073709551616 % 4294967296 else ~tmp___2~3 % 18446744073709551616 % 4294967296 - 4294967296); [2021-12-28 03:39:43,085 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L7497: SUMMARY for call #t~ret211 := copy_user_generic(~dst.base, ~dst.offset, ~src.base, ~src.offset, ~size); srcloc: null [2021-12-28 03:39:43,085 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##2: assume !#t~switch208;#t~switch208 := #t~switch208 || 2 == ~size; [2021-12-28 03:39:43,085 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L7460: assume #t~switch208;#res := ~ret~1; [2021-12-28 03:39:43,085 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L7460: assume !#t~switch208;#t~switch208 := #t~switch208 || 8 == ~size; [2021-12-28 03:39:43,085 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L7487-1: assume -9223372036854775808 <= #t~ret210 && #t~ret210 <= 9223372036854775807;~tmp___1~4 := #t~ret210;havoc #t~ret210; [2021-12-28 03:39:43,086 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L7487: SUMMARY for call #t~ret210 := ldv__builtin_expect((if 0 != ~ret~1 then 1 else 0), 0); srcloc: null [2021-12-28 03:39:43,086 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L7483: assume #t~switch208; [2021-12-28 03:39:43,086 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L7483: assume !#t~switch208;#t~switch208 := true; [2021-12-28 03:39:43,086 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L7475: assume 0 != ~tmp___0~9;#res := ~ret~1; [2021-12-28 03:39:43,086 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L7475: assume !(0 != ~tmp___0~9);#res := ~ret~1; [2021-12-28 03:39:43,086 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L7496: assume #t~switch208; [2021-12-28 03:39:43,086 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L7496: assume !#t~switch208; [2021-12-28 03:39:43,086 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L7465: assume #t~switch208;#res := ~ret~1; [2021-12-28 03:39:43,086 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L7465: assume !#t~switch208;#t~switch208 := #t~switch208 || 10 == ~size; [2021-12-28 03:39:46,941 INFO L275 CfgBuilder]: Performing block encoding [2021-12-28 03:39:46,955 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-28 03:39:46,955 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-28 03:39:46,958 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 03:39:46 BoogieIcfgContainer [2021-12-28 03:39:46,958 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-28 03:39:46,959 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-28 03:39:46,959 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-28 03:39:46,961 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-28 03:39:46,961 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.12 03:39:32" (1/3) ... [2021-12-28 03:39:46,962 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6389c5d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 03:39:46, skipping insertion in model container [2021-12-28 03:39:46,962 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:39:35" (2/3) ... [2021-12-28 03:39:46,962 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6389c5d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 03:39:46, skipping insertion in model container [2021-12-28 03:39:46,962 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 03:39:46" (3/3) ... [2021-12-28 03:39:46,963 INFO L111 eAbstractionObserver]: Analyzing ICFG main0_drivers-vhost-tcm_vhost-ko--32_7a--linux-3.7.3.i [2021-12-28 03:39:46,966 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-28 03:39:46,967 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-28 03:39:47,000 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-28 03:39:47,004 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-28 03:39:47,004 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-28 03:39:47,046 INFO L276 IsEmpty]: Start isEmpty. Operand has 2443 states, 1685 states have (on average 1.3465875370919882) internal successors, (2269), 1735 states have internal predecessors, (2269), 642 states have call successors, (642), 114 states have call predecessors, (642), 114 states have return successors, (642), 630 states have call predecessors, (642), 642 states have call successors, (642) [2021-12-28 03:39:47,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-12-28 03:39:47,050 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:39:47,050 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:39:47,050 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:39:47,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:39:47,054 INFO L85 PathProgramCache]: Analyzing trace with hash -1306392421, now seen corresponding path program 1 times [2021-12-28 03:39:47,059 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:39:47,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927486266] [2021-12-28 03:39:47,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:39:47,060 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:39:47,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:39:47,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-28 03:39:47,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:39:47,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 03:39:47,453 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:39:47,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927486266] [2021-12-28 03:39:47,454 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927486266] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:39:47,454 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:39:47,454 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 03:39:47,456 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696571885] [2021-12-28 03:39:47,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:39:47,459 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 03:39:47,459 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:39:47,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 03:39:47,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 03:39:47,486 INFO L87 Difference]: Start difference. First operand has 2443 states, 1685 states have (on average 1.3465875370919882) internal successors, (2269), 1735 states have internal predecessors, (2269), 642 states have call successors, (642), 114 states have call predecessors, (642), 114 states have return successors, (642), 630 states have call predecessors, (642), 642 states have call successors, (642) Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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) [2021-12-28 03:39:47,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:39:47,712 INFO L93 Difference]: Finished difference Result 4865 states and 7178 transitions. [2021-12-28 03:39:47,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 03:39:47,715 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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 15 [2021-12-28 03:39:47,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:39:47,743 INFO L225 Difference]: With dead ends: 4865 [2021-12-28 03:39:47,743 INFO L226 Difference]: Without dead ends: 2427 [2021-12-28 03:39:47,758 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 03:39:47,762 INFO L933 BasicCegarLoop]: 3535 mSDtfsCounter, 3526 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3526 SdHoareTripleChecker+Valid, 3535 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 03:39:47,763 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3526 Valid, 3535 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 03:39:47,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2427 states. [2021-12-28 03:39:47,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2427 to 2427. [2021-12-28 03:39:47,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2427 states, 1672 states have (on average 1.3415071770334928) internal successors, (2243), 1719 states have internal predecessors, (2243), 641 states have call successors, (641), 114 states have call predecessors, (641), 113 states have return successors, (630), 618 states have call predecessors, (630), 630 states have call successors, (630) [2021-12-28 03:39:47,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2427 states to 2427 states and 3514 transitions. [2021-12-28 03:39:47,927 INFO L78 Accepts]: Start accepts. Automaton has 2427 states and 3514 transitions. Word has length 15 [2021-12-28 03:39:47,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:39:47,928 INFO L470 AbstractCegarLoop]: Abstraction has 2427 states and 3514 transitions. [2021-12-28 03:39:47,928 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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) [2021-12-28 03:39:47,929 INFO L276 IsEmpty]: Start isEmpty. Operand 2427 states and 3514 transitions. [2021-12-28 03:39:47,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-12-28 03:39:47,930 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:39:47,930 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:39:47,930 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-28 03:39:47,930 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:39:47,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:39:47,932 INFO L85 PathProgramCache]: Analyzing trace with hash -1844610202, now seen corresponding path program 1 times [2021-12-28 03:39:47,932 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:39:47,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526056783] [2021-12-28 03:39:47,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:39:47,933 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:39:47,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:39:48,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-28 03:39:48,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:39:48,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 03:39:48,041 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:39:48,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526056783] [2021-12-28 03:39:48,042 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526056783] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:39:48,042 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:39:48,042 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 03:39:48,042 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753974116] [2021-12-28 03:39:48,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:39:48,043 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 03:39:48,043 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:39:48,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 03:39:48,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 03:39:48,044 INFO L87 Difference]: Start difference. First operand 2427 states and 3514 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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) [2021-12-28 03:39:48,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:39:48,126 INFO L93 Difference]: Finished difference Result 2429 states and 3515 transitions. [2021-12-28 03:39:48,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 03:39:48,127 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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 16 [2021-12-28 03:39:48,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:39:48,137 INFO L225 Difference]: With dead ends: 2429 [2021-12-28 03:39:48,138 INFO L226 Difference]: Without dead ends: 2426 [2021-12-28 03:39:48,139 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 03:39:48,140 INFO L933 BasicCegarLoop]: 3511 mSDtfsCounter, 3501 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3501 SdHoareTripleChecker+Valid, 3511 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 03:39:48,141 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3501 Valid, 3511 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 03:39:48,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2426 states. [2021-12-28 03:39:48,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2426 to 2426. [2021-12-28 03:39:48,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2426 states, 1672 states have (on average 1.3409090909090908) internal successors, (2242), 1718 states have internal predecessors, (2242), 640 states have call successors, (640), 114 states have call predecessors, (640), 113 states have return successors, (630), 618 states have call predecessors, (630), 630 states have call successors, (630) [2021-12-28 03:39:48,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2426 states to 2426 states and 3512 transitions. [2021-12-28 03:39:48,284 INFO L78 Accepts]: Start accepts. Automaton has 2426 states and 3512 transitions. Word has length 16 [2021-12-28 03:39:48,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:39:48,284 INFO L470 AbstractCegarLoop]: Abstraction has 2426 states and 3512 transitions. [2021-12-28 03:39:48,284 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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) [2021-12-28 03:39:48,284 INFO L276 IsEmpty]: Start isEmpty. Operand 2426 states and 3512 transitions. [2021-12-28 03:39:48,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-12-28 03:39:48,285 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:39:48,285 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:39:48,285 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-28 03:39:48,286 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:39:48,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:39:48,286 INFO L85 PathProgramCache]: Analyzing trace with hash -1349487362, now seen corresponding path program 1 times [2021-12-28 03:39:48,286 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:39:48,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27998638] [2021-12-28 03:39:48,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:39:48,287 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:39:48,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:39:48,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-28 03:39:48,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:39:48,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 03:39:48,380 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:39:48,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27998638] [2021-12-28 03:39:48,380 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27998638] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:39:48,380 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:39:48,380 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 03:39:48,381 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857150977] [2021-12-28 03:39:48,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:39:48,381 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 03:39:48,381 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:39:48,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 03:39:48,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 03:39:48,382 INFO L87 Difference]: Start difference. First operand 2426 states and 3512 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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) [2021-12-28 03:39:48,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:39:48,467 INFO L93 Difference]: Finished difference Result 2428 states and 3513 transitions. [2021-12-28 03:39:48,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 03:39:48,468 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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 17 [2021-12-28 03:39:48,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:39:48,478 INFO L225 Difference]: With dead ends: 2428 [2021-12-28 03:39:48,479 INFO L226 Difference]: Without dead ends: 2425 [2021-12-28 03:39:48,480 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 03:39:48,481 INFO L933 BasicCegarLoop]: 3509 mSDtfsCounter, 3498 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3498 SdHoareTripleChecker+Valid, 3509 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 03:39:48,482 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3498 Valid, 3509 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 03:39:48,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2425 states. [2021-12-28 03:39:48,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2425 to 2425. [2021-12-28 03:39:48,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2425 states, 1672 states have (on average 1.340311004784689) internal successors, (2241), 1717 states have internal predecessors, (2241), 639 states have call successors, (639), 114 states have call predecessors, (639), 113 states have return successors, (630), 618 states have call predecessors, (630), 630 states have call successors, (630) [2021-12-28 03:39:48,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2425 states to 2425 states and 3510 transitions. [2021-12-28 03:39:48,555 INFO L78 Accepts]: Start accepts. Automaton has 2425 states and 3510 transitions. Word has length 17 [2021-12-28 03:39:48,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:39:48,556 INFO L470 AbstractCegarLoop]: Abstraction has 2425 states and 3510 transitions. [2021-12-28 03:39:48,556 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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) [2021-12-28 03:39:48,556 INFO L276 IsEmpty]: Start isEmpty. Operand 2425 states and 3510 transitions. [2021-12-28 03:39:48,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-12-28 03:39:48,556 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:39:48,557 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:39:48,557 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-28 03:39:48,557 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:39:48,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:39:48,557 INFO L85 PathProgramCache]: Analyzing trace with hash 1114423657, now seen corresponding path program 1 times [2021-12-28 03:39:48,558 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:39:48,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099175579] [2021-12-28 03:39:48,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:39:48,558 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:39:48,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:39:48,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-28 03:39:48,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:39:48,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 03:39:48,661 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:39:48,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099175579] [2021-12-28 03:39:48,661 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099175579] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:39:48,661 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:39:48,662 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 03:39:48,662 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604777550] [2021-12-28 03:39:48,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:39:48,662 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 03:39:48,662 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:39:48,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 03:39:48,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 03:39:48,663 INFO L87 Difference]: Start difference. First operand 2425 states and 3510 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 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) [2021-12-28 03:39:48,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:39:48,801 INFO L93 Difference]: Finished difference Result 5710 states and 8140 transitions. [2021-12-28 03:39:48,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 03:39:48,801 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), 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 18 [2021-12-28 03:39:48,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:39:48,816 INFO L225 Difference]: With dead ends: 5710 [2021-12-28 03:39:48,816 INFO L226 Difference]: Without dead ends: 3324 [2021-12-28 03:39:48,825 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 03:39:48,826 INFO L933 BasicCegarLoop]: 3814 mSDtfsCounter, 1903 mSDsluCounter, 2756 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1903 SdHoareTripleChecker+Valid, 6570 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 03:39:48,826 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1903 Valid, 6570 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 03:39:48,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3324 states. [2021-12-28 03:39:48,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3324 to 3317. [2021-12-28 03:39:48,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3317 states, 2281 states have (on average 1.3160894344585707) internal successors, (3002), 2348 states have internal predecessors, (3002), 838 states have call successors, (838), 200 states have call predecessors, (838), 197 states have return successors, (832), 806 states have call predecessors, (832), 826 states have call successors, (832) [2021-12-28 03:39:48,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3317 states to 3317 states and 4672 transitions. [2021-12-28 03:39:48,934 INFO L78 Accepts]: Start accepts. Automaton has 3317 states and 4672 transitions. Word has length 18 [2021-12-28 03:39:48,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:39:48,935 INFO L470 AbstractCegarLoop]: Abstraction has 3317 states and 4672 transitions. [2021-12-28 03:39:48,935 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 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) [2021-12-28 03:39:48,935 INFO L276 IsEmpty]: Start isEmpty. Operand 3317 states and 4672 transitions. [2021-12-28 03:39:48,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-12-28 03:39:48,936 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:39:48,936 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:39:48,936 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-28 03:39:48,936 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:39:48,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:39:48,937 INFO L85 PathProgramCache]: Analyzing trace with hash 186258785, now seen corresponding path program 1 times [2021-12-28 03:39:48,937 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:39:48,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531381683] [2021-12-28 03:39:48,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:39:48,937 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:39:48,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:39:49,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-28 03:39:49,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:39:49,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 03:39:49,078 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:39:49,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531381683] [2021-12-28 03:39:49,078 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531381683] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:39:49,079 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:39:49,080 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 03:39:49,080 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297351609] [2021-12-28 03:39:49,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:39:49,080 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 03:39:49,081 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:39:49,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 03:39:49,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 03:39:49,081 INFO L87 Difference]: Start difference. First operand 3317 states and 4672 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 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) [2021-12-28 03:39:49,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:39:49,187 INFO L93 Difference]: Finished difference Result 3352 states and 4699 transitions. [2021-12-28 03:39:49,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 03:39:49,188 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 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 19 [2021-12-28 03:39:49,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:39:49,205 INFO L225 Difference]: With dead ends: 3352 [2021-12-28 03:39:49,206 INFO L226 Difference]: Without dead ends: 3348 [2021-12-28 03:39:49,208 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 03:39:49,211 INFO L933 BasicCegarLoop]: 3504 mSDtfsCounter, 3424 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3424 SdHoareTripleChecker+Valid, 3588 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 03:39:49,211 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3424 Valid, 3588 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 03:39:49,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3348 states. [2021-12-28 03:39:49,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3348 to 3344. [2021-12-28 03:39:49,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3344 states, 2302 states have (on average 1.312771503040834) internal successors, (3022), 2367 states have internal predecessors, (3022), 836 states have call successors, (836), 208 states have call predecessors, (836), 205 states have return successors, (832), 806 states have call predecessors, (832), 826 states have call successors, (832) [2021-12-28 03:39:49,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3344 states to 3344 states and 4690 transitions. [2021-12-28 03:39:49,321 INFO L78 Accepts]: Start accepts. Automaton has 3344 states and 4690 transitions. Word has length 19 [2021-12-28 03:39:49,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:39:49,321 INFO L470 AbstractCegarLoop]: Abstraction has 3344 states and 4690 transitions. [2021-12-28 03:39:49,321 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 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) [2021-12-28 03:39:49,321 INFO L276 IsEmpty]: Start isEmpty. Operand 3344 states and 4690 transitions. [2021-12-28 03:39:49,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-12-28 03:39:49,322 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:39:49,322 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:39:49,322 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-28 03:39:49,323 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:39:49,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:39:49,323 INFO L85 PathProgramCache]: Analyzing trace with hash 1477923692, now seen corresponding path program 1 times [2021-12-28 03:39:49,323 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:39:49,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225456776] [2021-12-28 03:39:49,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:39:49,324 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:39:49,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:39:49,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-28 03:39:49,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:39:49,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 03:39:49,419 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:39:49,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225456776] [2021-12-28 03:39:49,419 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225456776] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:39:49,419 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:39:49,419 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 03:39:49,419 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965981685] [2021-12-28 03:39:49,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:39:49,420 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 03:39:49,420 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:39:49,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 03:39:49,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 03:39:49,421 INFO L87 Difference]: Start difference. First operand 3344 states and 4690 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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) [2021-12-28 03:39:49,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:39:49,523 INFO L93 Difference]: Finished difference Result 3378 states and 4724 transitions. [2021-12-28 03:39:49,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 03:39:49,523 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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 20 [2021-12-28 03:39:49,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:39:49,536 INFO L225 Difference]: With dead ends: 3378 [2021-12-28 03:39:49,537 INFO L226 Difference]: Without dead ends: 3354 [2021-12-28 03:39:49,539 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 03:39:49,539 INFO L933 BasicCegarLoop]: 3502 mSDtfsCounter, 3412 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3412 SdHoareTripleChecker+Valid, 3588 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 03:39:49,540 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3412 Valid, 3588 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 03:39:49,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3354 states. [2021-12-28 03:39:49,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3354 to 3352. [2021-12-28 03:39:49,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3352 states, 2310 states have (on average 1.3116883116883118) internal successors, (3030), 2373 states have internal predecessors, (3030), 830 states have call successors, (830), 214 states have call predecessors, (830), 211 states have return successors, (828), 802 states have call predecessors, (828), 822 states have call successors, (828) [2021-12-28 03:39:49,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3352 states to 3352 states and 4688 transitions. [2021-12-28 03:39:49,651 INFO L78 Accepts]: Start accepts. Automaton has 3352 states and 4688 transitions. Word has length 20 [2021-12-28 03:39:49,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:39:49,651 INFO L470 AbstractCegarLoop]: Abstraction has 3352 states and 4688 transitions. [2021-12-28 03:39:49,651 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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) [2021-12-28 03:39:49,651 INFO L276 IsEmpty]: Start isEmpty. Operand 3352 states and 4688 transitions. [2021-12-28 03:39:49,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-12-28 03:39:49,655 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:39:49,656 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-28 03:39:49,656 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-28 03:39:49,656 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:39:49,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:39:49,656 INFO L85 PathProgramCache]: Analyzing trace with hash -1489572794, now seen corresponding path program 1 times [2021-12-28 03:39:49,657 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:39:49,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854981708] [2021-12-28 03:39:49,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:39:49,657 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:39:49,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:39:49,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-28 03:39:49,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:39:49,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 03:39:49,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:39:49,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-28 03:39:49,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:39:49,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-28 03:39:49,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:39:49,827 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-28 03:39:49,828 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:39:49,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854981708] [2021-12-28 03:39:49,828 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854981708] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:39:49,828 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:39:49,828 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-28 03:39:49,828 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146883742] [2021-12-28 03:39:49,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:39:49,829 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-28 03:39:49,829 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:39:49,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-28 03:39:49,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-28 03:39:49,830 INFO L87 Difference]: Start difference. First operand 3352 states and 4688 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-28 03:39:52,474 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 [] [2021-12-28 03:39:54,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:39:54,780 INFO L93 Difference]: Finished difference Result 5209 states and 7206 transitions. [2021-12-28 03:39:54,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 03:39:54,781 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 53 [2021-12-28 03:39:54,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:39:54,798 INFO L225 Difference]: With dead ends: 5209 [2021-12-28 03:39:54,799 INFO L226 Difference]: Without dead ends: 2663 [2021-12-28 03:39:54,810 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-28 03:39:54,811 INFO L933 BasicCegarLoop]: 3025 mSDtfsCounter, 2335 mSDsluCounter, 1894 mSDsCounter, 0 mSdLazyCounter, 1899 mSolverCounterSat, 899 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2702 SdHoareTripleChecker+Valid, 4919 SdHoareTripleChecker+Invalid, 2799 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 899 IncrementalHoareTripleChecker+Valid, 1899 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2021-12-28 03:39:54,811 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2702 Valid, 4919 Invalid, 2799 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [899 Valid, 1899 Invalid, 1 Unknown, 0 Unchecked, 4.7s Time] [2021-12-28 03:39:54,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2663 states. [2021-12-28 03:39:54,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2663 to 2541. [2021-12-28 03:39:54,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2541 states, 1750 states have (on average 1.3011428571428572) internal successors, (2277), 1790 states have internal predecessors, (2277), 622 states have call successors, (622), 170 states have call predecessors, (622), 168 states have return successors, (615), 603 states have call predecessors, (615), 615 states have call successors, (615) [2021-12-28 03:39:54,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2541 states to 2541 states and 3514 transitions. [2021-12-28 03:39:54,888 INFO L78 Accepts]: Start accepts. Automaton has 2541 states and 3514 transitions. Word has length 53 [2021-12-28 03:39:54,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:39:54,889 INFO L470 AbstractCegarLoop]: Abstraction has 2541 states and 3514 transitions. [2021-12-28 03:39:54,890 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-28 03:39:54,890 INFO L276 IsEmpty]: Start isEmpty. Operand 2541 states and 3514 transitions. [2021-12-28 03:39:54,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-12-28 03:39:54,895 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:39:54,895 INFO L514 BasicCegarLoop]: 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] [2021-12-28 03:39:54,895 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-28 03:39:54,895 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:39:54,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:39:54,896 INFO L85 PathProgramCache]: Analyzing trace with hash 1826413853, now seen corresponding path program 1 times [2021-12-28 03:39:54,896 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:39:54,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979137472] [2021-12-28 03:39:54,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:39:54,896 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:39:54,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:39:55,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-28 03:39:55,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:39:55,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 03:39:55,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:39:55,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-28 03:39:55,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:39:55,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-28 03:39:55,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:39:55,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-28 03:39:55,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:39:55,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-28 03:39:55,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:39:55,055 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-28 03:39:55,055 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:39:55,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979137472] [2021-12-28 03:39:55,055 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979137472] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:39:55,055 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:39:55,056 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-28 03:39:55,056 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116503943] [2021-12-28 03:39:55,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:39:55,056 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-28 03:39:55,056 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:39:55,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-28 03:39:55,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-28 03:39:55,057 INFO L87 Difference]: Start difference. First operand 2541 states and 3514 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-12-28 03:39:57,587 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 [] [2021-12-28 03:39:59,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:39:59,631 INFO L93 Difference]: Finished difference Result 5191 states and 7218 transitions. [2021-12-28 03:39:59,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-28 03:39:59,632 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 71 [2021-12-28 03:39:59,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:39:59,643 INFO L225 Difference]: With dead ends: 5191 [2021-12-28 03:39:59,643 INFO L226 Difference]: Without dead ends: 2663 [2021-12-28 03:39:59,649 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-28 03:39:59,650 INFO L933 BasicCegarLoop]: 2976 mSDtfsCounter, 969 mSDsluCounter, 2931 mSDsCounter, 0 mSdLazyCounter, 2064 mSolverCounterSat, 621 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1203 SdHoareTripleChecker+Valid, 5907 SdHoareTripleChecker+Invalid, 2686 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 621 IncrementalHoareTripleChecker+Valid, 2064 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2021-12-28 03:39:59,651 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1203 Valid, 5907 Invalid, 2686 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [621 Valid, 2064 Invalid, 1 Unknown, 0 Unchecked, 4.4s Time] [2021-12-28 03:39:59,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2663 states. [2021-12-28 03:39:59,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2663 to 2541. [2021-12-28 03:39:59,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2541 states, 1750 states have (on average 1.2977142857142858) internal successors, (2271), 1790 states have internal predecessors, (2271), 622 states have call successors, (622), 170 states have call predecessors, (622), 168 states have return successors, (615), 603 states have call predecessors, (615), 615 states have call successors, (615) [2021-12-28 03:39:59,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2541 states to 2541 states and 3508 transitions. [2021-12-28 03:39:59,732 INFO L78 Accepts]: Start accepts. Automaton has 2541 states and 3508 transitions. Word has length 71 [2021-12-28 03:39:59,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:39:59,733 INFO L470 AbstractCegarLoop]: Abstraction has 2541 states and 3508 transitions. [2021-12-28 03:39:59,734 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-12-28 03:39:59,734 INFO L276 IsEmpty]: Start isEmpty. Operand 2541 states and 3508 transitions. [2021-12-28 03:39:59,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-12-28 03:39:59,738 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:39:59,738 INFO L514 BasicCegarLoop]: 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] [2021-12-28 03:39:59,738 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-28 03:39:59,738 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:39:59,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:39:59,739 INFO L85 PathProgramCache]: Analyzing trace with hash 1510551762, now seen corresponding path program 1 times [2021-12-28 03:39:59,739 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:39:59,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967857133] [2021-12-28 03:39:59,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:39:59,739 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:39:59,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:39:59,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-28 03:39:59,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:39:59,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 03:39:59,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:39:59,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-28 03:39:59,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:39:59,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:39:59,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:39:59,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 03:39:59,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:39:59,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-28 03:39:59,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:39:59,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-28 03:39:59,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:39:59,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-28 03:39:59,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:39:59,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-28 03:39:59,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:39:59,924 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-28 03:39:59,924 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:39:59,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967857133] [2021-12-28 03:39:59,924 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967857133] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:39:59,924 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:39:59,925 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-28 03:39:59,925 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604940615] [2021-12-28 03:39:59,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:39:59,926 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-28 03:39:59,926 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:39:59,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-28 03:39:59,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-28 03:39:59,927 INFO L87 Difference]: Start difference. First operand 2541 states and 3508 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-28 03:40:02,779 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 [] [2021-12-28 03:40:04,822 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 03:40:06,865 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 03:40:10,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:40:10,102 INFO L93 Difference]: Finished difference Result 5151 states and 7129 transitions. [2021-12-28 03:40:10,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-28 03:40:10,102 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 81 [2021-12-28 03:40:10,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:40:10,114 INFO L225 Difference]: With dead ends: 5151 [2021-12-28 03:40:10,114 INFO L226 Difference]: Without dead ends: 2661 [2021-12-28 03:40:10,122 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-12-28 03:40:10,124 INFO L933 BasicCegarLoop]: 2976 mSDtfsCounter, 977 mSDsluCounter, 6422 mSDsCounter, 0 mSdLazyCounter, 5005 mSolverCounterSat, 614 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1211 SdHoareTripleChecker+Valid, 9398 SdHoareTripleChecker+Invalid, 5622 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 614 IncrementalHoareTripleChecker+Valid, 5005 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.0s IncrementalHoareTripleChecker+Time [2021-12-28 03:40:10,124 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1211 Valid, 9398 Invalid, 5622 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [614 Valid, 5005 Invalid, 3 Unknown, 0 Unchecked, 10.0s Time] [2021-12-28 03:40:10,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2661 states. [2021-12-28 03:40:10,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2661 to 2541. [2021-12-28 03:40:10,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2541 states, 1750 states have (on average 1.2971428571428572) internal successors, (2270), 1789 states have internal predecessors, (2270), 622 states have call successors, (622), 170 states have call predecessors, (622), 168 states have return successors, (615), 603 states have call predecessors, (615), 615 states have call successors, (615) [2021-12-28 03:40:10,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2541 states to 2541 states and 3507 transitions. [2021-12-28 03:40:10,215 INFO L78 Accepts]: Start accepts. Automaton has 2541 states and 3507 transitions. Word has length 81 [2021-12-28 03:40:10,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:40:10,215 INFO L470 AbstractCegarLoop]: Abstraction has 2541 states and 3507 transitions. [2021-12-28 03:40:10,216 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-28 03:40:10,216 INFO L276 IsEmpty]: Start isEmpty. Operand 2541 states and 3507 transitions. [2021-12-28 03:40:10,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-12-28 03:40:10,219 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:40:10,219 INFO L514 BasicCegarLoop]: 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] [2021-12-28 03:40:10,220 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-28 03:40:10,220 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:40:10,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:40:10,220 INFO L85 PathProgramCache]: Analyzing trace with hash -419868096, now seen corresponding path program 1 times [2021-12-28 03:40:10,220 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:40:10,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736183402] [2021-12-28 03:40:10,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:40:10,221 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:40:10,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:10,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-28 03:40:10,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:10,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-28 03:40:10,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:10,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-28 03:40:10,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:10,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-28 03:40:10,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:10,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:40:10,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:10,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 03:40:10,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:10,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-28 03:40:10,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:10,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-28 03:40:10,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:10,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-28 03:40:10,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:10,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-28 03:40:10,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:10,415 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-28 03:40:10,415 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:40:10,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736183402] [2021-12-28 03:40:10,416 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736183402] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:40:10,416 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:40:10,416 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-28 03:40:10,417 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355844097] [2021-12-28 03:40:10,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:40:10,417 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-28 03:40:10,417 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:40:10,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-28 03:40:10,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-28 03:40:10,418 INFO L87 Difference]: Start difference. First operand 2541 states and 3507 transitions. Second operand has 6 states, 6 states have (on average 10.0) internal successors, (60), 5 states have internal predecessors, (60), 3 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-12-28 03:40:13,329 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 03:40:15,375 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 03:40:17,410 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 [] [2021-12-28 03:40:20,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:40:20,600 INFO L93 Difference]: Finished difference Result 5150 states and 7127 transitions. [2021-12-28 03:40:20,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-28 03:40:20,601 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 5 states have internal predecessors, (60), 3 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 85 [2021-12-28 03:40:20,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:40:20,615 INFO L225 Difference]: With dead ends: 5150 [2021-12-28 03:40:20,615 INFO L226 Difference]: Without dead ends: 2650 [2021-12-28 03:40:20,621 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-12-28 03:40:20,622 INFO L933 BasicCegarLoop]: 2975 mSDtfsCounter, 978 mSDsluCounter, 6418 mSDsCounter, 0 mSdLazyCounter, 4999 mSolverCounterSat, 616 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1213 SdHoareTripleChecker+Valid, 9393 SdHoareTripleChecker+Invalid, 5618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 616 IncrementalHoareTripleChecker+Valid, 4999 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.0s IncrementalHoareTripleChecker+Time [2021-12-28 03:40:20,622 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1213 Valid, 9393 Invalid, 5618 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [616 Valid, 4999 Invalid, 3 Unknown, 0 Unchecked, 10.0s Time] [2021-12-28 03:40:20,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2650 states. [2021-12-28 03:40:20,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2650 to 2530. [2021-12-28 03:40:20,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2530 states, 1743 states have (on average 1.2971887550200802) internal successors, (2261), 1782 states have internal predecessors, (2261), 620 states have call successors, (620), 168 states have call predecessors, (620), 166 states have return successors, (613), 601 states have call predecessors, (613), 613 states have call successors, (613) [2021-12-28 03:40:20,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2530 states to 2530 states and 3494 transitions. [2021-12-28 03:40:20,692 INFO L78 Accepts]: Start accepts. Automaton has 2530 states and 3494 transitions. Word has length 85 [2021-12-28 03:40:20,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:40:20,693 INFO L470 AbstractCegarLoop]: Abstraction has 2530 states and 3494 transitions. [2021-12-28 03:40:20,693 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 5 states have internal predecessors, (60), 3 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-12-28 03:40:20,693 INFO L276 IsEmpty]: Start isEmpty. Operand 2530 states and 3494 transitions. [2021-12-28 03:40:20,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-12-28 03:40:20,699 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:40:20,699 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-12-28 03:40:20,700 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-28 03:40:20,700 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:40:20,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:40:20,700 INFO L85 PathProgramCache]: Analyzing trace with hash -1462653290, now seen corresponding path program 1 times [2021-12-28 03:40:20,700 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:40:20,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742127353] [2021-12-28 03:40:20,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:40:20,701 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:40:20,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:20,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-28 03:40:20,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:20,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-28 03:40:20,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:20,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 03:40:20,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:20,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-28 03:40:20,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:20,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:40:20,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:20,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-28 03:40:20,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:20,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-28 03:40:20,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:20,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:40:20,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:20,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 03:40:20,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:20,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-28 03:40:20,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:20,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-28 03:40:20,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:20,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-28 03:40:20,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:20,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-28 03:40:20,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:20,917 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-12-28 03:40:20,917 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:40:20,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742127353] [2021-12-28 03:40:20,917 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742127353] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:40:20,917 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:40:20,918 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-28 03:40:20,918 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849406438] [2021-12-28 03:40:20,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:40:20,919 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-28 03:40:20,919 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:40:20,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-28 03:40:20,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-28 03:40:20,920 INFO L87 Difference]: Start difference. First operand 2530 states and 3494 transitions. Second operand has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (17), 4 states have call predecessors, (17), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-28 03:40:23,922 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 [] [2021-12-28 03:40:25,963 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 03:40:29,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:40:29,626 INFO L93 Difference]: Finished difference Result 5256 states and 7292 transitions. [2021-12-28 03:40:29,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-28 03:40:29,627 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (17), 4 states have call predecessors, (17), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 109 [2021-12-28 03:40:29,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:40:29,636 INFO L225 Difference]: With dead ends: 5256 [2021-12-28 03:40:29,636 INFO L226 Difference]: Without dead ends: 2765 [2021-12-28 03:40:29,641 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-12-28 03:40:29,642 INFO L933 BasicCegarLoop]: 2941 mSDtfsCounter, 1623 mSDsluCounter, 5642 mSDsCounter, 0 mSdLazyCounter, 4673 mSolverCounterSat, 1501 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1771 SdHoareTripleChecker+Valid, 8583 SdHoareTripleChecker+Invalid, 6176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1501 IncrementalHoareTripleChecker+Valid, 4673 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2021-12-28 03:40:29,642 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1771 Valid, 8583 Invalid, 6176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1501 Valid, 4673 Invalid, 2 Unknown, 0 Unchecked, 8.5s Time] [2021-12-28 03:40:29,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2765 states. [2021-12-28 03:40:29,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2765 to 2530. [2021-12-28 03:40:29,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2530 states, 1743 states have (on average 1.2966150315547906) internal successors, (2260), 1782 states have internal predecessors, (2260), 620 states have call successors, (620), 168 states have call predecessors, (620), 166 states have return successors, (613), 601 states have call predecessors, (613), 613 states have call successors, (613) [2021-12-28 03:40:29,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2530 states to 2530 states and 3493 transitions. [2021-12-28 03:40:29,718 INFO L78 Accepts]: Start accepts. Automaton has 2530 states and 3493 transitions. Word has length 109 [2021-12-28 03:40:29,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:40:29,718 INFO L470 AbstractCegarLoop]: Abstraction has 2530 states and 3493 transitions. [2021-12-28 03:40:29,719 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (17), 4 states have call predecessors, (17), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-28 03:40:29,719 INFO L276 IsEmpty]: Start isEmpty. Operand 2530 states and 3493 transitions. [2021-12-28 03:40:29,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-12-28 03:40:29,722 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:40:29,722 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-12-28 03:40:29,722 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-28 03:40:29,722 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:40:29,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:40:29,723 INFO L85 PathProgramCache]: Analyzing trace with hash 1803076531, now seen corresponding path program 1 times [2021-12-28 03:40:29,723 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:40:29,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735931897] [2021-12-28 03:40:29,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:40:29,723 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:40:30,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:30,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-28 03:40:30,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:30,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-28 03:40:30,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:30,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 03:40:30,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:30,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-28 03:40:30,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:30,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:40:30,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:30,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-28 03:40:30,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:30,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-28 03:40:30,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:30,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-28 03:40:30,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:30,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:40:30,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:30,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 03:40:30,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:30,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-28 03:40:30,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:30,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-28 03:40:30,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:30,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-28 03:40:30,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:30,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-28 03:40:30,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:30,347 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-12-28 03:40:30,347 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:40:30,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735931897] [2021-12-28 03:40:30,348 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735931897] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 03:40:30,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1364335392] [2021-12-28 03:40:30,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:40:30,348 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:40:30,348 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:40:30,350 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 03:40:30,352 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-28 03:40:31,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:31,182 INFO L263 TraceCheckSpWp]: Trace formula consists of 2802 conjuncts, 41 conjunts are in the unsatisfiable core [2021-12-28 03:40:31,191 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:40:31,505 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-28 03:40:31,506 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 03:40:31,506 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1364335392] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:40:31,506 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-28 03:40:31,506 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [14] total 16 [2021-12-28 03:40:31,506 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520086959] [2021-12-28 03:40:31,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:40:31,506 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-28 03:40:31,507 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:40:31,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-28 03:40:31,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=209, Unknown=0, NotChecked=0, Total=240 [2021-12-28 03:40:31,548 INFO L87 Difference]: Start difference. First operand 2530 states and 3493 transitions. Second operand has 12 states, 10 states have (on average 7.9) internal successors, (79), 9 states have internal predecessors, (79), 4 states have call successors, (18), 2 states have call predecessors, (18), 5 states have return successors, (14), 5 states have call predecessors, (14), 4 states have call successors, (14) [2021-12-28 03:40:33,726 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 [] [2021-12-28 03:40:34,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:40:34,811 INFO L93 Difference]: Finished difference Result 5035 states and 6961 transitions. [2021-12-28 03:40:34,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-28 03:40:34,812 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 7.9) internal successors, (79), 9 states have internal predecessors, (79), 4 states have call successors, (18), 2 states have call predecessors, (18), 5 states have return successors, (14), 5 states have call predecessors, (14), 4 states have call successors, (14) Word has length 112 [2021-12-28 03:40:34,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:40:34,820 INFO L225 Difference]: With dead ends: 5035 [2021-12-28 03:40:34,820 INFO L226 Difference]: Without dead ends: 2539 [2021-12-28 03:40:34,826 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 133 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=57, Invalid=363, Unknown=0, NotChecked=0, Total=420 [2021-12-28 03:40:34,826 INFO L933 BasicCegarLoop]: 3049 mSDtfsCounter, 2 mSDsluCounter, 30350 mSDsCounter, 0 mSdLazyCounter, 1458 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 33399 SdHoareTripleChecker+Invalid, 1464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1458 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2021-12-28 03:40:34,827 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 33399 Invalid, 1464 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1458 Invalid, 1 Unknown, 0 Unchecked, 3.0s Time] [2021-12-28 03:40:34,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2539 states. [2021-12-28 03:40:34,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2539 to 2537. [2021-12-28 03:40:34,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2537 states, 1748 states have (on average 1.295766590389016) internal successors, (2265), 1787 states have internal predecessors, (2265), 621 states have call successors, (621), 168 states have call predecessors, (621), 167 states have return successors, (620), 603 states have call predecessors, (620), 614 states have call successors, (620) [2021-12-28 03:40:34,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2537 states to 2537 states and 3506 transitions. [2021-12-28 03:40:34,896 INFO L78 Accepts]: Start accepts. Automaton has 2537 states and 3506 transitions. Word has length 112 [2021-12-28 03:40:34,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:40:34,896 INFO L470 AbstractCegarLoop]: Abstraction has 2537 states and 3506 transitions. [2021-12-28 03:40:34,896 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 7.9) internal successors, (79), 9 states have internal predecessors, (79), 4 states have call successors, (18), 2 states have call predecessors, (18), 5 states have return successors, (14), 5 states have call predecessors, (14), 4 states have call successors, (14) [2021-12-28 03:40:34,896 INFO L276 IsEmpty]: Start isEmpty. Operand 2537 states and 3506 transitions. [2021-12-28 03:40:34,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-12-28 03:40:34,900 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:40:34,900 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-12-28 03:40:34,929 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-12-28 03:40:35,130 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-12-28 03:40:35,130 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:40:35,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:40:35,131 INFO L85 PathProgramCache]: Analyzing trace with hash -1360497218, now seen corresponding path program 1 times [2021-12-28 03:40:35,131 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:40:35,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902125073] [2021-12-28 03:40:35,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:40:35,132 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms