./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--ips.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version fcb8e130 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-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--ips.ko-entry_point.cil.out.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 4a4f053d4c8e05b05b5c7887f5d3a3e872b1a59439c17cfd3f803da6611a851a --- Real Ultimate output --- This is Ultimate 0.2.1-dev-fcb8e13 [2021-11-23 01:48:34,221 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 01:48:34,224 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 01:48:34,283 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 01:48:34,284 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 01:48:34,287 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 01:48:34,289 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 01:48:34,291 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 01:48:34,293 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 01:48:34,298 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 01:48:34,299 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 01:48:34,300 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 01:48:34,301 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 01:48:34,303 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 01:48:34,305 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 01:48:34,308 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 01:48:34,308 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 01:48:34,309 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 01:48:34,312 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 01:48:34,317 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 01:48:34,318 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 01:48:34,319 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 01:48:34,321 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 01:48:34,321 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 01:48:34,323 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 01:48:34,324 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 01:48:34,324 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 01:48:34,325 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 01:48:34,326 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 01:48:34,327 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 01:48:34,327 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 01:48:34,328 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 01:48:34,329 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 01:48:34,330 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 01:48:34,331 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 01:48:34,332 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 01:48:34,332 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 01:48:34,333 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 01:48:34,333 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 01:48:34,334 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 01:48:34,335 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 01:48:34,336 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-23 01:48:34,367 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 01:48:34,368 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 01:48:34,368 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 01:48:34,369 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 01:48:34,370 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 01:48:34,370 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 01:48:34,370 INFO L138 SettingsManager]: * Use SBE=true [2021-11-23 01:48:34,370 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 01:48:34,371 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 01:48:34,371 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 01:48:34,372 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 01:48:34,372 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 01:48:34,372 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 01:48:34,372 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 01:48:34,372 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 01:48:34,373 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 01:48:34,373 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 01:48:34,373 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 01:48:34,373 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 01:48:34,373 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 01:48:34,374 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 01:48:34,374 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 01:48:34,374 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 01:48:34,374 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-23 01:48:34,374 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 01:48:34,375 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-23 01:48:34,375 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-23 01:48:34,375 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 01:48:34,375 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 01:48:34,375 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4a4f053d4c8e05b05b5c7887f5d3a3e872b1a59439c17cfd3f803da6611a851a [2021-11-23 01:48:34,628 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 01:48:34,652 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 01:48:34,654 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 01:48:34,655 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 01:48:34,656 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 01:48:34,657 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--ips.ko-entry_point.cil.out.i [2021-11-23 01:48:34,715 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d83565bed/00ea10e84bd2495d9025b63cf4301445/FLAG2c9f9bfff [2021-11-23 01:48:35,457 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 01:48:35,458 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--ips.ko-entry_point.cil.out.i [2021-11-23 01:48:35,520 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d83565bed/00ea10e84bd2495d9025b63cf4301445/FLAG2c9f9bfff [2021-11-23 01:48:35,991 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d83565bed/00ea10e84bd2495d9025b63cf4301445 [2021-11-23 01:48:35,994 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 01:48:35,996 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 01:48:36,001 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 01:48:36,001 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 01:48:36,003 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 01:48:36,004 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:48:35" (1/1) ... [2021-11-23 01:48:36,004 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f28cc37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:48:36, skipping insertion in model container [2021-11-23 01:48:36,004 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:48:35" (1/1) ... [2021-11-23 01:48:36,010 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 01:48:36,148 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 01:48:38,368 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-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--ips.ko-entry_point.cil.out.i[368085,368098] [2021-11-23 01:48:38,416 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 01:48:38,477 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 01:48:39,156 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-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--ips.ko-entry_point.cil.out.i[368085,368098] [2021-11-23 01:48:39,161 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 01:48:39,282 INFO L208 MainTranslator]: Completed translation [2021-11-23 01:48:39,283 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:48:39 WrapperNode [2021-11-23 01:48:39,283 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 01:48:39,285 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 01:48:39,286 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 01:48:39,286 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 01:48:39,292 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:48:39" (1/1) ... [2021-11-23 01:48:39,414 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:48:39" (1/1) ... [2021-11-23 01:48:40,245 INFO L137 Inliner]: procedures = 329, calls = 4496, calls flagged for inlining = 785, calls inlined = 3145, statements flattened = 47050 [2021-11-23 01:48:40,245 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 01:48:40,246 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 01:48:40,247 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 01:48:40,247 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 01:48:40,254 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:48:39" (1/1) ... [2021-11-23 01:48:40,255 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:48:39" (1/1) ... [2021-11-23 01:48:40,523 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:48:39" (1/1) ... [2021-11-23 01:48:40,524 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:48:39" (1/1) ... [2021-11-23 01:48:41,297 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:48:39" (1/1) ... [2021-11-23 01:48:41,445 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:48:39" (1/1) ... [2021-11-23 01:48:41,533 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:48:39" (1/1) ... [2021-11-23 01:48:41,933 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 01:48:41,934 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 01:48:41,934 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 01:48:41,935 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 01:48:41,952 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:48:39" (1/1) ... [2021-11-23 01:48:41,958 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 01:48:41,967 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-23 01:48:42,009 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) [2021-11-23 01:48:42,079 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 [2021-11-23 01:48:42,126 INFO L130 BoogieDeclarations]: Found specification of procedure ips_done [2021-11-23 01:48:42,126 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_done [2021-11-23 01:48:42,127 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-23 01:48:42,127 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-23 01:48:42,127 INFO L130 BoogieDeclarations]: Found specification of procedure ips_send_cmd [2021-11-23 01:48:42,127 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_send_cmd [2021-11-23 01:48:42,128 INFO L130 BoogieDeclarations]: Found specification of procedure ips_intr_copperhead [2021-11-23 01:48:42,128 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_intr_copperhead [2021-11-23 01:48:42,128 INFO L130 BoogieDeclarations]: Found specification of procedure ips_hainit [2021-11-23 01:48:42,128 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_hainit [2021-11-23 01:48:42,128 INFO L130 BoogieDeclarations]: Found specification of procedure ips_wait [2021-11-23 01:48:42,128 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_wait [2021-11-23 01:48:42,128 INFO L130 BoogieDeclarations]: Found specification of procedure ips_readwrite_page5 [2021-11-23 01:48:42,129 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_readwrite_page5 [2021-11-23 01:48:42,129 INFO L130 BoogieDeclarations]: Found specification of procedure ips_flush_and_reset [2021-11-23 01:48:42,129 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_flush_and_reset [2021-11-23 01:48:42,129 INFO L130 BoogieDeclarations]: Found specification of procedure ips_send_wait [2021-11-23 01:48:42,129 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_send_wait [2021-11-23 01:48:42,129 INFO L130 BoogieDeclarations]: Found specification of procedure ips_intr_morpheus [2021-11-23 01:48:42,130 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_intr_morpheus [2021-11-23 01:48:42,130 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 01:48:42,130 INFO L130 BoogieDeclarations]: Found specification of procedure ips_queue_lck [2021-11-23 01:48:42,130 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_queue_lck [2021-11-23 01:48:42,130 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 01:48:42,130 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 01:48:42,130 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-23 01:48:42,130 INFO L130 BoogieDeclarations]: Found specification of procedure ips_release [2021-11-23 01:48:42,131 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_release [2021-11-23 01:48:42,131 INFO L130 BoogieDeclarations]: Found specification of procedure strcat [2021-11-23 01:48:42,131 INFO L130 BoogieDeclarations]: Found specification of procedure ips_isinit_morpheus [2021-11-23 01:48:42,131 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_isinit_morpheus [2021-11-23 01:48:42,131 INFO L130 BoogieDeclarations]: Found specification of procedure ips_next [2021-11-23 01:48:42,131 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_next [2021-11-23 01:48:42,131 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-23 01:48:42,132 INFO L130 BoogieDeclarations]: Found specification of procedure ips_clear_adapter [2021-11-23 01:48:42,136 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_clear_adapter [2021-11-23 01:48:42,136 INFO L130 BoogieDeclarations]: Found specification of procedure ips_flash_bios [2021-11-23 01:48:42,136 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_flash_bios [2021-11-23 01:48:42,136 INFO L130 BoogieDeclarations]: Found specification of procedure ips_read_subsystem_parameters [2021-11-23 01:48:42,136 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_read_subsystem_parameters [2021-11-23 01:48:42,136 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-23 01:48:42,137 INFO L130 BoogieDeclarations]: Found specification of procedure ips_write_driver_status [2021-11-23 01:48:42,137 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_write_driver_status [2021-11-23 01:48:42,137 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 01:48:42,137 INFO L130 BoogieDeclarations]: Found specification of procedure ips_init_phase2 [2021-11-23 01:48:42,137 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_init_phase2 [2021-11-23 01:48:42,138 INFO L130 BoogieDeclarations]: Found specification of procedure ips_read_adapter_status [2021-11-23 01:48:42,138 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_read_adapter_status [2021-11-23 01:48:42,138 INFO L130 BoogieDeclarations]: Found specification of procedure ips_init_phase1 [2021-11-23 01:48:42,138 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_init_phase1 [2021-11-23 01:48:42,138 INFO L130 BoogieDeclarations]: Found specification of procedure ipsintr_done [2021-11-23 01:48:42,138 INFO L138 BoogieDeclarations]: Found implementation of procedure ipsintr_done [2021-11-23 01:48:42,139 INFO L130 BoogieDeclarations]: Found specification of procedure ips_insert_device [2021-11-23 01:48:42,139 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_insert_device [2021-11-23 01:48:42,139 INFO L130 BoogieDeclarations]: Found specification of procedure ips_read_config [2021-11-23 01:48:42,139 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_read_config [2021-11-23 01:48:42,139 INFO L130 BoogieDeclarations]: Found specification of procedure ips_ffdc_reset [2021-11-23 01:48:42,140 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_ffdc_reset [2021-11-23 01:48:42,140 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 01:48:42,141 INFO L130 BoogieDeclarations]: Found specification of procedure ips_make_passthru [2021-11-23 01:48:42,141 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_make_passthru [2021-11-23 01:48:42,141 INFO L130 BoogieDeclarations]: Found specification of procedure ips_reset_copperhead_memio [2021-11-23 01:48:42,142 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_reset_copperhead_memio [2021-11-23 01:48:42,142 INFO L130 BoogieDeclarations]: Found specification of procedure ips_eh_reset [2021-11-23 01:48:42,142 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_eh_reset [2021-11-23 01:48:42,155 INFO L130 BoogieDeclarations]: Found specification of procedure __ips_eh_reset [2021-11-23 01:48:42,155 INFO L138 BoogieDeclarations]: Found implementation of procedure __ips_eh_reset [2021-11-23 01:48:42,156 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 01:48:42,156 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 01:48:42,156 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 01:48:42,156 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-23 01:48:42,156 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-23 01:48:42,157 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-23 01:48:42,157 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-23 01:48:42,157 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-23 01:48:42,158 INFO L130 BoogieDeclarations]: Found specification of procedure ips_remove_device [2021-11-23 01:48:42,158 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_remove_device [2021-11-23 01:48:42,158 INFO L130 BoogieDeclarations]: Found specification of procedure ips_queue [2021-11-23 01:48:42,158 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_queue [2021-11-23 01:48:42,158 INFO L130 BoogieDeclarations]: Found specification of procedure ips_reset_morpheus [2021-11-23 01:48:42,158 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_reset_morpheus [2021-11-23 01:48:42,158 INFO L130 BoogieDeclarations]: Found specification of procedure ips_ffdc_time [2021-11-23 01:48:42,158 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_ffdc_time [2021-11-23 01:48:42,159 INFO L130 BoogieDeclarations]: Found specification of procedure ips_get_bios_version [2021-11-23 01:48:42,159 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_get_bios_version [2021-11-23 01:48:42,159 INFO L130 BoogieDeclarations]: Found specification of procedure ips_reset_copperhead [2021-11-23 01:48:42,159 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_reset_copperhead [2021-11-23 01:48:42,159 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-23 01:48:42,159 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-23 01:48:42,159 INFO L130 BoogieDeclarations]: Found specification of procedure ips_flash_copperhead [2021-11-23 01:48:42,160 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_flash_copperhead [2021-11-23 01:48:42,160 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 01:48:42,160 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2021-11-23 01:48:42,161 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2021-11-23 01:48:42,161 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-11-23 01:48:42,161 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 01:48:42,161 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 01:48:44,102 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 01:48:44,104 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 01:52:59,572 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 01:52:59,627 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 01:52:59,628 INFO L301 CfgBuilder]: Removed 8 assume(true) statements. [2021-11-23 01:52:59,638 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:52:59 BoogieIcfgContainer [2021-11-23 01:52:59,638 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 01:52:59,640 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 01:52:59,640 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 01:52:59,643 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 01:52:59,643 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 01:48:35" (1/3) ... [2021-11-23 01:52:59,644 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b659f9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:52:59, skipping insertion in model container [2021-11-23 01:52:59,644 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:48:39" (2/3) ... [2021-11-23 01:52:59,645 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b659f9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:52:59, skipping insertion in model container [2021-11-23 01:52:59,645 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:52:59" (3/3) ... [2021-11-23 01:52:59,646 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--ips.ko-entry_point.cil.out.i [2021-11-23 01:52:59,656 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 01:52:59,657 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2021-11-23 01:52:59,730 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 01:52:59,746 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 [2021-11-23 01:52:59,746 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-11-23 01:52:59,875 INFO L276 IsEmpty]: Start isEmpty. Operand has 9391 states, 9218 states have (on average 1.4431546973313083) internal successors, (13303), 9229 states have internal predecessors, (13303), 128 states have call successors, (128), 39 states have call predecessors, (128), 39 states have return successors, (128), 128 states have call predecessors, (128), 128 states have call successors, (128) [2021-11-23 01:52:59,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-23 01:52:59,898 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:52:59,901 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 01:52:59,901 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ips_init_phase1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ips_queue_lckErr0ASSERT_VIOLATIONERROR_FUNCTION, ips_init_phase1Err0ASSERT_VIOLATIONERROR_FUNCTION, ips_init_phase1Err1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-23 01:52:59,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:52:59,906 INFO L85 PathProgramCache]: Analyzing trace with hash 123294732, now seen corresponding path program 1 times [2021-11-23 01:52:59,914 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 01:52:59,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905969247] [2021-11-23 01:52:59,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:52:59,920 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:53:00,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:53:01,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 01:53:01,054 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 01:53:01,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905969247] [2021-11-23 01:53:01,054 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905969247] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 01:53:01,055 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 01:53:01,055 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 01:53:01,056 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921475699] [2021-11-23 01:53:01,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 01:53:01,060 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-23 01:53:01,061 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 01:53:01,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-23 01:53:01,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 01:53:01,109 INFO L87 Difference]: Start difference. First operand has 9391 states, 9218 states have (on average 1.4431546973313083) internal successors, (13303), 9229 states have internal predecessors, (13303), 128 states have call successors, (128), 39 states have call predecessors, (128), 39 states have return successors, (128), 128 states have call predecessors, (128), 128 states have call successors, (128) Second operand has 2 states, 2 states have (on average 31.0) internal successors, (62), 2 states have internal predecessors, (62), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 01:53:01,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 01:53:01,512 INFO L93 Difference]: Finished difference Result 18741 states and 27196 transitions. [2021-11-23 01:53:01,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 01:53:01,514 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 31.0) internal successors, (62), 2 states have internal predecessors, (62), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2021-11-23 01:53:01,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 01:53:01,591 INFO L225 Difference]: With dead ends: 18741 [2021-11-23 01:53:01,592 INFO L226 Difference]: Without dead ends: 9065 [2021-11-23 01:53:01,687 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 01:53:01,690 INFO L933 BasicCegarLoop]: 13431 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 13431 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 01:53:01,691 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 13431 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 01:53:01,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9065 states. [2021-11-23 01:53:02,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9065 to 9065. [2021-11-23 01:53:02,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9065 states, 8893 states have (on average 1.4174069492859553) internal successors, (12605), 8903 states have internal predecessors, (12605), 128 states have call successors, (128), 39 states have call predecessors, (128), 39 states have return successors, (128), 128 states have call predecessors, (128), 128 states have call successors, (128) [2021-11-23 01:53:02,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9065 states to 9065 states and 12861 transitions. [2021-11-23 01:53:02,209 INFO L78 Accepts]: Start accepts. Automaton has 9065 states and 12861 transitions. Word has length 64 [2021-11-23 01:53:02,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 01:53:02,211 INFO L470 AbstractCegarLoop]: Abstraction has 9065 states and 12861 transitions. [2021-11-23 01:53:02,211 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 31.0) internal successors, (62), 2 states have internal predecessors, (62), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 01:53:02,212 INFO L276 IsEmpty]: Start isEmpty. Operand 9065 states and 12861 transitions. [2021-11-23 01:53:02,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-23 01:53:02,218 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:53:02,218 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 01:53:02,218 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 01:53:02,218 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ips_init_phase1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ips_queue_lckErr0ASSERT_VIOLATIONERROR_FUNCTION, ips_init_phase1Err0ASSERT_VIOLATIONERROR_FUNCTION, ips_init_phase1Err1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-23 01:53:02,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:53:02,220 INFO L85 PathProgramCache]: Analyzing trace with hash -578095334, now seen corresponding path program 1 times [2021-11-23 01:53:02,220 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 01:53:02,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766762148] [2021-11-23 01:53:02,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:53:02,222 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:53:02,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:53:02,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 01:53:02,925 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 01:53:02,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766762148] [2021-11-23 01:53:02,926 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766762148] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 01:53:02,926 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 01:53:02,926 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 01:53:02,926 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488078538] [2021-11-23 01:53:02,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 01:53:02,927 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 01:53:02,928 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 01:53:02,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 01:53:02,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 01:53:02,928 INFO L87 Difference]: Start difference. First operand 9065 states and 12861 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 01:53:03,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 01:53:03,618 INFO L93 Difference]: Finished difference Result 26851 states and 38130 transitions. [2021-11-23 01:53:03,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 01:53:03,619 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2021-11-23 01:53:03,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 01:53:03,745 INFO L225 Difference]: With dead ends: 26851 [2021-11-23 01:53:03,745 INFO L226 Difference]: Without dead ends: 17830 [2021-11-23 01:53:03,789 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 01:53:03,790 INFO L933 BasicCegarLoop]: 14368 mSDtfsCounter, 12497 mSDsluCounter, 12800 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12497 SdHoareTripleChecker+Valid, 27168 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 01:53:03,790 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12497 Valid, 27168 Invalid, 15 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 01:53:03,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17830 states. [2021-11-23 01:53:04,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17830 to 17819. [2021-11-23 01:53:04,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17819 states, 17482 states have (on average 1.4186591923120924) internal successors, (24801), 17498 states have internal predecessors, (24801), 254 states have call successors, (254), 78 states have call predecessors, (254), 78 states have return successors, (254), 254 states have call predecessors, (254), 254 states have call successors, (254) [2021-11-23 01:53:04,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17819 states to 17819 states and 25309 transitions. [2021-11-23 01:53:04,275 INFO L78 Accepts]: Start accepts. Automaton has 17819 states and 25309 transitions. Word has length 64 [2021-11-23 01:53:04,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 01:53:04,276 INFO L470 AbstractCegarLoop]: Abstraction has 17819 states and 25309 transitions. [2021-11-23 01:53:04,276 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 01:53:04,276 INFO L276 IsEmpty]: Start isEmpty. Operand 17819 states and 25309 transitions. [2021-11-23 01:53:04,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-23 01:53:04,288 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:53:04,289 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 01:53:04,289 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 01:53:04,289 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ips_queue_lckErr0ASSERT_VIOLATIONERROR_FUNCTION === [ips_queue_lckErr0ASSERT_VIOLATIONERROR_FUNCTION, ips_init_phase1Err0ASSERT_VIOLATIONERROR_FUNCTION, ips_init_phase1Err1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-23 01:53:04,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:53:04,290 INFO L85 PathProgramCache]: Analyzing trace with hash 1255446766, now seen corresponding path program 1 times [2021-11-23 01:53:04,290 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 01:53:04,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338256305] [2021-11-23 01:53:04,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:53:04,291 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:53:04,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:53:04,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 01:53:04,920 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 01:53:04,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338256305] [2021-11-23 01:53:04,920 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338256305] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 01:53:04,921 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 01:53:04,921 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 01:53:04,921 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305529472] [2021-11-23 01:53:04,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 01:53:04,921 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 01:53:04,921 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 01:53:04,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 01:53:04,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 01:53:04,922 INFO L87 Difference]: Start difference. First operand 17819 states and 25309 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 01:53:06,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 01:53:06,170 INFO L93 Difference]: Finished difference Result 52165 states and 74625 transitions. [2021-11-23 01:53:06,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 01:53:06,171 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2021-11-23 01:53:06,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 01:53:06,360 INFO L225 Difference]: With dead ends: 52165 [2021-11-23 01:53:06,360 INFO L226 Difference]: Without dead ends: 34390 [2021-11-23 01:53:06,453 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 01:53:06,458 INFO L933 BasicCegarLoop]: 13232 mSDtfsCounter, 12120 mSDsluCounter, 12844 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12120 SdHoareTripleChecker+Valid, 26076 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-23 01:53:06,460 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12120 Valid, 26076 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-23 01:53:06,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34390 states. [2021-11-23 01:53:07,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34390 to 34325. [2021-11-23 01:53:07,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34325 states, 33679 states have (on average 1.4198758870512782) internal successors, (47820), 33702 states have internal predecessors, (47820), 485 states have call successors, (485), 152 states have call predecessors, (485), 156 states have return successors, (970), 494 states have call predecessors, (970), 485 states have call successors, (970) [2021-11-23 01:53:07,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34325 states to 34325 states and 49275 transitions. [2021-11-23 01:53:07,408 INFO L78 Accepts]: Start accepts. Automaton has 34325 states and 49275 transitions. Word has length 81 [2021-11-23 01:53:07,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 01:53:07,409 INFO L470 AbstractCegarLoop]: Abstraction has 34325 states and 49275 transitions. [2021-11-23 01:53:07,409 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 01:53:07,410 INFO L276 IsEmpty]: Start isEmpty. Operand 34325 states and 49275 transitions. [2021-11-23 01:53:07,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-23 01:53:07,422 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:53:07,422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 01:53:07,422 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 01:53:07,422 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ips_init_phase1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ips_queue_lckErr0ASSERT_VIOLATIONERROR_FUNCTION, ips_init_phase1Err0ASSERT_VIOLATIONERROR_FUNCTION, ips_init_phase1Err1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-23 01:53:07,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:53:07,423 INFO L85 PathProgramCache]: Analyzing trace with hash 936938077, now seen corresponding path program 1 times [2021-11-23 01:53:07,423 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 01:53:07,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286025705] [2021-11-23 01:53:07,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:53:07,424 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:53:07,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:53:08,088 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 01:53:08,089 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 01:53:08,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286025705] [2021-11-23 01:53:08,089 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286025705] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 01:53:08,089 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 01:53:08,089 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 01:53:08,089 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640128090] [2021-11-23 01:53:08,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 01:53:08,089 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 01:53:08,090 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 01:53:08,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 01:53:08,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 01:53:08,090 INFO L87 Difference]: Start difference. First operand 34325 states and 49275 transitions. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 01:53:10,189 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 01:53:11,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 01:53:11,311 INFO L93 Difference]: Finished difference Result 68612 states and 98511 transitions. [2021-11-23 01:53:11,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 01:53:11,312 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2021-11-23 01:53:11,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 01:53:11,492 INFO L225 Difference]: With dead ends: 68612 [2021-11-23 01:53:11,492 INFO L226 Difference]: Without dead ends: 34315 [2021-11-23 01:53:11,993 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 01:53:11,994 INFO L933 BasicCegarLoop]: 12859 mSDtfsCounter, 3 mSDsluCounter, 25712 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 38571 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-11-23 01:53:11,994 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 38571 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 1 Unknown, 0 Unchecked, 2.4s Time] [2021-11-23 01:53:12,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34315 states. [2021-11-23 01:53:12,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34315 to 34315. [2021-11-23 01:53:12,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34315 states, 33669 states have (on average 1.4198223885473285) internal successors, (47804), 33692 states have internal predecessors, (47804), 485 states have call successors, (485), 152 states have call predecessors, (485), 156 states have return successors, (970), 494 states have call predecessors, (970), 485 states have call successors, (970) [2021-11-23 01:53:12,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34315 states to 34315 states and 49259 transitions. [2021-11-23 01:53:12,800 INFO L78 Accepts]: Start accepts. Automaton has 34315 states and 49259 transitions. Word has length 83 [2021-11-23 01:53:12,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 01:53:12,801 INFO L470 AbstractCegarLoop]: Abstraction has 34315 states and 49259 transitions. [2021-11-23 01:53:12,801 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 01:53:12,801 INFO L276 IsEmpty]: Start isEmpty. Operand 34315 states and 49259 transitions. [2021-11-23 01:53:12,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-23 01:53:12,815 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:53:12,815 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 01:53:12,815 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-23 01:53:12,816 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ips_init_phase1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ips_queue_lckErr0ASSERT_VIOLATIONERROR_FUNCTION, ips_init_phase1Err0ASSERT_VIOLATIONERROR_FUNCTION, ips_init_phase1Err1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-23 01:53:12,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:53:12,816 INFO L85 PathProgramCache]: Analyzing trace with hash -942672838, now seen corresponding path program 1 times [2021-11-23 01:53:12,816 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 01:53:12,817 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168884409] [2021-11-23 01:53:12,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:53:12,817 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:53:13,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:53:13,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 01:53:13,433 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 01:53:13,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168884409] [2021-11-23 01:53:13,434 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168884409] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 01:53:13,434 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 01:53:13,434 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 01:53:13,434 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061241825] [2021-11-23 01:53:13,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 01:53:13,434 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 01:53:13,434 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 01:53:13,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 01:53:13,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 01:53:13,435 INFO L87 Difference]: Start difference. First operand 34315 states and 49259 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 1 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 01:53:15,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 01:53:15,144 INFO L93 Difference]: Finished difference Result 102777 states and 147555 transitions. [2021-11-23 01:53:15,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 01:53:15,145 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 1 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2021-11-23 01:53:15,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 01:53:15,438 INFO L225 Difference]: With dead ends: 102777 [2021-11-23 01:53:15,439 INFO L226 Difference]: Without dead ends: 68506 [2021-11-23 01:53:15,701 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 01:53:15,704 INFO L933 BasicCegarLoop]: 15218 mSDtfsCounter, 12817 mSDsluCounter, 12804 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12817 SdHoareTripleChecker+Valid, 28022 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 01:53:15,705 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12817 Valid, 28022 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 01:53:15,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68506 states. [2021-11-23 01:53:17,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68506 to 68496. [2021-11-23 01:53:17,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68496 states, 67213 states have (on average 1.4199038876407837) internal successors, (95436), 67255 states have internal predecessors, (95436), 966 states have call successors, (966), 304 states have call predecessors, (966), 312 states have return successors, (1932), 984 states have call predecessors, (1932), 966 states have call successors, (1932) [2021-11-23 01:53:18,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68496 states to 68496 states and 98334 transitions. [2021-11-23 01:53:18,239 INFO L78 Accepts]: Start accepts. Automaton has 68496 states and 98334 transitions. Word has length 92 [2021-11-23 01:53:18,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 01:53:18,240 INFO L470 AbstractCegarLoop]: Abstraction has 68496 states and 98334 transitions. [2021-11-23 01:53:18,240 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 1 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 01:53:18,240 INFO L276 IsEmpty]: Start isEmpty. Operand 68496 states and 98334 transitions. [2021-11-23 01:53:18,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-23 01:53:18,260 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:53:18,260 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 01:53:18,260 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-23 01:53:18,261 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ips_init_phase1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ips_queue_lckErr0ASSERT_VIOLATIONERROR_FUNCTION, ips_init_phase1Err0ASSERT_VIOLATIONERROR_FUNCTION, ips_init_phase1Err1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-23 01:53:18,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:53:18,262 INFO L85 PathProgramCache]: Analyzing trace with hash 1572488126, now seen corresponding path program 1 times [2021-11-23 01:53:18,262 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 01:53:18,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321933939] [2021-11-23 01:53:18,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:53:18,262 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:53:18,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:53:18,935 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-23 01:53:18,935 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 01:53:18,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321933939] [2021-11-23 01:53:18,935 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321933939] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 01:53:18,935 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 01:53:18,935 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 01:53:18,935 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945253714] [2021-11-23 01:53:18,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 01:53:18,936 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 01:53:18,936 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 01:53:18,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 01:53:18,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 01:53:18,937 INFO L87 Difference]: Start difference. First operand 68496 states and 98334 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 01:53:21,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 01:53:21,357 INFO L93 Difference]: Finished difference Result 141572 states and 204845 transitions. [2021-11-23 01:53:21,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 01:53:21,358 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2021-11-23 01:53:21,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 01:53:21,872 INFO L225 Difference]: With dead ends: 141572 [2021-11-23 01:53:21,872 INFO L226 Difference]: Without dead ends: 73120 [2021-11-23 01:53:22,428 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 01:53:22,429 INFO L933 BasicCegarLoop]: 12910 mSDtfsCounter, 768 mSDsluCounter, 12839 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 771 SdHoareTripleChecker+Valid, 25749 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 01:53:22,429 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [771 Valid, 25749 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 01:53:22,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73120 states. [2021-11-23 01:53:23,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73120 to 68512. [2021-11-23 01:53:23,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68512 states, 67229 states have (on average 1.4198039536509541) internal successors, (95452), 67271 states have internal predecessors, (95452), 966 states have call successors, (966), 304 states have call predecessors, (966), 312 states have return successors, (1932), 984 states have call predecessors, (1932), 966 states have call successors, (1932) [2021-11-23 01:53:24,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68512 states to 68512 states and 98350 transitions. [2021-11-23 01:53:24,319 INFO L78 Accepts]: Start accepts. Automaton has 68512 states and 98350 transitions. Word has length 92 [2021-11-23 01:53:24,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 01:53:24,320 INFO L470 AbstractCegarLoop]: Abstraction has 68512 states and 98350 transitions. [2021-11-23 01:53:24,320 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 01:53:24,320 INFO L276 IsEmpty]: Start isEmpty. Operand 68512 states and 98350 transitions. [2021-11-23 01:53:24,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-23 01:53:24,342 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:53:24,342 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 01:53:24,344 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-23 01:53:24,345 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ips_init_phase1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ips_queue_lckErr0ASSERT_VIOLATIONERROR_FUNCTION, ips_init_phase1Err0ASSERT_VIOLATIONERROR_FUNCTION, ips_init_phase1Err1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-23 01:53:24,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:53:24,346 INFO L85 PathProgramCache]: Analyzing trace with hash -60587200, now seen corresponding path program 1 times [2021-11-23 01:53:24,346 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 01:53:24,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859988027] [2021-11-23 01:53:24,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:53:24,346 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:53:24,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:53:25,240 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-23 01:53:25,240 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 01:53:25,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859988027] [2021-11-23 01:53:25,240 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859988027] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 01:53:25,240 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 01:53:25,240 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 01:53:25,240 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672461163] [2021-11-23 01:53:25,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 01:53:25,241 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 01:53:25,241 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 01:53:25,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 01:53:25,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 01:53:25,242 INFO L87 Difference]: Start difference. First operand 68512 states and 98350 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 2 states have internal predecessors, (93), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 01:53:27,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 01:53:27,218 INFO L93 Difference]: Finished difference Result 131674 states and 190808 transitions. [2021-11-23 01:53:27,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 01:53:27,218 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 2 states have internal predecessors, (93), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-11-23 01:53:27,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 01:53:27,847 INFO L225 Difference]: With dead ends: 131674 [2021-11-23 01:53:27,847 INFO L226 Difference]: Without dead ends: 131666 [2021-11-23 01:53:27,906 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 01:53:27,907 INFO L933 BasicCegarLoop]: 14018 mSDtfsCounter, 11961 mSDsluCounter, 12643 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11961 SdHoareTripleChecker+Valid, 26661 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 01:53:27,907 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11961 Valid, 26661 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 01:53:28,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131666 states. [2021-11-23 01:53:30,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131666 to 131466. [2021-11-23 01:53:30,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131466 states, 129169 states have (on average 1.4210530390418754) internal successors, (183556), 129185 states have internal predecessors, (183556), 1692 states have call successors, (1692), 576 states have call predecessors, (1692), 600 states have return successors, (5252), 1800 states have call predecessors, (5252), 1692 states have call successors, (5252) [2021-11-23 01:53:31,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131466 states to 131466 states and 190500 transitions. [2021-11-23 01:53:31,713 INFO L78 Accepts]: Start accepts. Automaton has 131466 states and 190500 transitions. Word has length 96 [2021-11-23 01:53:31,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 01:53:31,714 INFO L470 AbstractCegarLoop]: Abstraction has 131466 states and 190500 transitions. [2021-11-23 01:53:31,714 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 2 states have internal predecessors, (93), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 01:53:31,714 INFO L276 IsEmpty]: Start isEmpty. Operand 131466 states and 190500 transitions. [2021-11-23 01:53:31,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-11-23 01:53:31,830 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:53:31,830 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 01:53:31,830 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-23 01:53:31,831 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ips_init_phase1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ips_queue_lckErr0ASSERT_VIOLATIONERROR_FUNCTION, ips_init_phase1Err0ASSERT_VIOLATIONERROR_FUNCTION, ips_init_phase1Err1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-23 01:53:31,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:53:31,832 INFO L85 PathProgramCache]: Analyzing trace with hash -485937197, now seen corresponding path program 1 times [2021-11-23 01:53:31,832 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 01:53:31,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635507820] [2021-11-23 01:53:31,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:53:31,833 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:53:32,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:53:32,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 01:53:32,810 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 01:53:32,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635507820] [2021-11-23 01:53:32,810 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635507820] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 01:53:32,810 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 01:53:32,810 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 01:53:32,810 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311654053] [2021-11-23 01:53:32,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 01:53:32,811 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 01:53:32,811 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 01:53:32,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 01:53:32,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 01:53:32,812 INFO L87 Difference]: Start difference. First operand 131466 states and 190500 transitions. Second operand has 4 states, 4 states have (on average 30.25) internal successors, (121), 3 states have internal predecessors, (121), 1 states have call successors, (7), 1 states have call predecessors, (7), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)