./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 5b36d44f 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-wip.dd.seqcomp-5b36d44 [2021-11-07 16:10:08,316 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 16:10:08,318 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 16:10:08,354 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 16:10:08,354 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 16:10:08,358 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 16:10:08,359 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 16:10:08,362 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 16:10:08,362 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 16:10:08,363 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 16:10:08,364 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 16:10:08,364 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 16:10:08,364 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 16:10:08,365 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 16:10:08,366 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 16:10:08,367 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 16:10:08,370 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 16:10:08,374 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 16:10:08,377 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 16:10:08,379 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 16:10:08,383 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 16:10:08,386 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 16:10:08,387 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 16:10:08,393 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 16:10:08,395 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 16:10:08,395 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 16:10:08,395 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 16:10:08,396 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 16:10:08,396 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 16:10:08,397 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 16:10:08,397 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 16:10:08,397 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 16:10:08,398 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 16:10:08,398 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 16:10:08,399 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 16:10:08,399 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 16:10:08,400 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 16:10:08,400 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 16:10:08,400 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 16:10:08,401 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 16:10:08,401 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 16:10:08,402 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-07 16:10:08,415 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 16:10:08,422 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 16:10:08,423 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 16:10:08,423 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 16:10:08,424 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 16:10:08,424 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 16:10:08,425 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 16:10:08,425 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 16:10:08,425 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 16:10:08,425 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 16:10:08,426 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 16:10:08,426 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 16:10:08,426 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 16:10:08,426 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 16:10:08,426 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 16:10:08,426 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 16:10:08,427 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 16:10:08,427 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 16:10:08,427 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 16:10:08,427 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 16:10:08,427 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 16:10:08,427 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 16:10:08,427 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 16:10:08,428 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 16:10:08,428 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 16:10:08,428 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 16:10:08,428 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 16:10:08,428 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 16:10:08,428 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 16:10:08,428 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4a4f053d4c8e05b05b5c7887f5d3a3e872b1a59439c17cfd3f803da6611a851a [2021-11-07 16:10:08,596 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 16:10:08,611 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 16:10:08,612 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 16:10:08,613 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 16:10:08,614 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 16:10:08,614 INFO L432 ainManager$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 [2021-11-07 16:10:08,652 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/810e7a4db/dfbb4a0c27eb40ffafba49557fae9b09/FLAG483baf82b [2021-11-07 16:10:09,291 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 16:10:09,292 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 [2021-11-07 16:10:09,330 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/810e7a4db/dfbb4a0c27eb40ffafba49557fae9b09/FLAG483baf82b [2021-11-07 16:10:09,691 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/810e7a4db/dfbb4a0c27eb40ffafba49557fae9b09 [2021-11-07 16:10:09,696 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 16:10:09,698 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 16:10:09,702 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 16:10:09,702 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 16:10:09,705 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 16:10:09,705 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:10:09" (1/1) ... [2021-11-07 16:10:09,706 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14ead0ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:10:09, skipping insertion in model container [2021-11-07 16:10:09,706 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:10:09" (1/1) ... [2021-11-07 16:10:09,712 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 16:10:09,831 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 16:10:11,349 WARN L228 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] [2021-11-07 16:10:11,383 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 16:10:11,436 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 16:10:11,947 WARN L228 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] [2021-11-07 16:10:11,951 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 16:10:12,040 INFO L208 MainTranslator]: Completed translation [2021-11-07 16:10:12,041 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:10:12 WrapperNode [2021-11-07 16:10:12,041 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 16:10:12,043 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 16:10:12,043 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 16:10:12,043 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 16:10:12,048 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:10:12" (1/1) ... [2021-11-07 16:10:12,153 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:10:12" (1/1) ... [2021-11-07 16:10:13,024 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 16:10:13,025 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 16:10:13,025 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 16:10:13,026 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 16:10:13,032 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:10:12" (1/1) ... [2021-11-07 16:10:13,047 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:10:12" (1/1) ... [2021-11-07 16:10:13,257 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:10:12" (1/1) ... [2021-11-07 16:10:13,262 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:10:12" (1/1) ... [2021-11-07 16:10:13,988 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:10:12" (1/1) ... [2021-11-07 16:10:14,103 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:10:12" (1/1) ... [2021-11-07 16:10:14,207 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:10:12" (1/1) ... [2021-11-07 16:10:14,370 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 16:10:14,372 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 16:10:14,372 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 16:10:14,372 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 16:10:14,373 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:10:12" (1/1) ... [2021-11-07 16:10:14,378 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 16:10:14,384 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 16:10:14,393 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) [2021-11-07 16:10:14,423 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 [2021-11-07 16:10:14,442 INFO L130 BoogieDeclarations]: Found specification of procedure ips_done [2021-11-07 16:10:14,442 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_done [2021-11-07 16:10:14,442 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-07 16:10:14,443 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-07 16:10:14,443 INFO L130 BoogieDeclarations]: Found specification of procedure ips_send_cmd [2021-11-07 16:10:14,443 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_send_cmd [2021-11-07 16:10:14,443 INFO L130 BoogieDeclarations]: Found specification of procedure ips_intr_copperhead [2021-11-07 16:10:14,443 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_intr_copperhead [2021-11-07 16:10:14,444 INFO L130 BoogieDeclarations]: Found specification of procedure ips_hainit [2021-11-07 16:10:14,444 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_hainit [2021-11-07 16:10:14,444 INFO L130 BoogieDeclarations]: Found specification of procedure ips_wait [2021-11-07 16:10:14,444 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_wait [2021-11-07 16:10:14,444 INFO L130 BoogieDeclarations]: Found specification of procedure ips_readwrite_page5 [2021-11-07 16:10:14,444 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_readwrite_page5 [2021-11-07 16:10:14,444 INFO L130 BoogieDeclarations]: Found specification of procedure ips_flush_and_reset [2021-11-07 16:10:14,444 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_flush_and_reset [2021-11-07 16:10:14,444 INFO L130 BoogieDeclarations]: Found specification of procedure ips_send_wait [2021-11-07 16:10:14,444 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_send_wait [2021-11-07 16:10:14,445 INFO L130 BoogieDeclarations]: Found specification of procedure ips_intr_morpheus [2021-11-07 16:10:14,445 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_intr_morpheus [2021-11-07 16:10:14,445 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 16:10:14,445 INFO L130 BoogieDeclarations]: Found specification of procedure ips_queue_lck [2021-11-07 16:10:14,445 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_queue_lck [2021-11-07 16:10:14,445 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 16:10:14,445 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 16:10:14,445 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 16:10:14,446 INFO L130 BoogieDeclarations]: Found specification of procedure ips_release [2021-11-07 16:10:14,446 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_release [2021-11-07 16:10:14,446 INFO L130 BoogieDeclarations]: Found specification of procedure strcat [2021-11-07 16:10:14,446 INFO L130 BoogieDeclarations]: Found specification of procedure ips_isinit_morpheus [2021-11-07 16:10:14,446 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_isinit_morpheus [2021-11-07 16:10:14,446 INFO L130 BoogieDeclarations]: Found specification of procedure ips_next [2021-11-07 16:10:14,446 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_next [2021-11-07 16:10:14,446 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-07 16:10:14,446 INFO L130 BoogieDeclarations]: Found specification of procedure ips_clear_adapter [2021-11-07 16:10:14,447 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_clear_adapter [2021-11-07 16:10:14,447 INFO L130 BoogieDeclarations]: Found specification of procedure ips_flash_bios [2021-11-07 16:10:14,447 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_flash_bios [2021-11-07 16:10:14,447 INFO L130 BoogieDeclarations]: Found specification of procedure ips_read_subsystem_parameters [2021-11-07 16:10:14,447 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_read_subsystem_parameters [2021-11-07 16:10:14,447 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-07 16:10:14,447 INFO L130 BoogieDeclarations]: Found specification of procedure ips_write_driver_status [2021-11-07 16:10:14,447 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_write_driver_status [2021-11-07 16:10:14,447 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 16:10:14,448 INFO L130 BoogieDeclarations]: Found specification of procedure ips_init_phase2 [2021-11-07 16:10:14,448 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_init_phase2 [2021-11-07 16:10:14,448 INFO L130 BoogieDeclarations]: Found specification of procedure ips_read_adapter_status [2021-11-07 16:10:14,448 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_read_adapter_status [2021-11-07 16:10:14,448 INFO L130 BoogieDeclarations]: Found specification of procedure ips_init_phase1 [2021-11-07 16:10:14,448 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_init_phase1 [2021-11-07 16:10:14,448 INFO L130 BoogieDeclarations]: Found specification of procedure ipsintr_done [2021-11-07 16:10:14,448 INFO L138 BoogieDeclarations]: Found implementation of procedure ipsintr_done [2021-11-07 16:10:14,449 INFO L130 BoogieDeclarations]: Found specification of procedure ips_insert_device [2021-11-07 16:10:14,449 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_insert_device [2021-11-07 16:10:14,449 INFO L130 BoogieDeclarations]: Found specification of procedure ips_read_config [2021-11-07 16:10:14,449 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_read_config [2021-11-07 16:10:14,449 INFO L130 BoogieDeclarations]: Found specification of procedure ips_ffdc_reset [2021-11-07 16:10:14,449 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_ffdc_reset [2021-11-07 16:10:14,450 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-07 16:10:14,450 INFO L130 BoogieDeclarations]: Found specification of procedure ips_make_passthru [2021-11-07 16:10:14,451 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_make_passthru [2021-11-07 16:10:14,451 INFO L130 BoogieDeclarations]: Found specification of procedure ips_reset_copperhead_memio [2021-11-07 16:10:14,451 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_reset_copperhead_memio [2021-11-07 16:10:14,451 INFO L130 BoogieDeclarations]: Found specification of procedure ips_eh_reset [2021-11-07 16:10:14,451 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_eh_reset [2021-11-07 16:10:14,451 INFO L130 BoogieDeclarations]: Found specification of procedure __ips_eh_reset [2021-11-07 16:10:14,452 INFO L138 BoogieDeclarations]: Found implementation of procedure __ips_eh_reset [2021-11-07 16:10:14,452 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 16:10:14,452 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 16:10:14,452 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-07 16:10:14,452 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-07 16:10:14,452 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-07 16:10:14,452 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-07 16:10:14,452 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-07 16:10:14,452 INFO L130 BoogieDeclarations]: Found specification of procedure ips_remove_device [2021-11-07 16:10:14,453 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_remove_device [2021-11-07 16:10:14,453 INFO L130 BoogieDeclarations]: Found specification of procedure ips_queue [2021-11-07 16:10:14,453 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_queue [2021-11-07 16:10:14,453 INFO L130 BoogieDeclarations]: Found specification of procedure ips_reset_morpheus [2021-11-07 16:10:14,453 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_reset_morpheus [2021-11-07 16:10:14,453 INFO L130 BoogieDeclarations]: Found specification of procedure ips_ffdc_time [2021-11-07 16:10:14,454 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_ffdc_time [2021-11-07 16:10:14,454 INFO L130 BoogieDeclarations]: Found specification of procedure ips_get_bios_version [2021-11-07 16:10:14,454 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_get_bios_version [2021-11-07 16:10:14,454 INFO L130 BoogieDeclarations]: Found specification of procedure ips_reset_copperhead [2021-11-07 16:10:14,454 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_reset_copperhead [2021-11-07 16:10:14,454 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-07 16:10:14,454 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-07 16:10:14,454 INFO L130 BoogieDeclarations]: Found specification of procedure ips_flash_copperhead [2021-11-07 16:10:14,454 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_flash_copperhead [2021-11-07 16:10:14,455 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 16:10:14,455 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2021-11-07 16:10:14,455 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2021-11-07 16:10:14,455 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-11-07 16:10:14,455 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 16:10:14,455 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 16:17:44,906 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 16:17:44,907 INFO L299 CfgBuilder]: Removed 6298 assume(true) statements. [2021-11-07 16:17:44,914 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:17:44 BoogieIcfgContainer [2021-11-07 16:17:44,914 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 16:17:44,916 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 16:17:44,916 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 16:17:44,918 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 16:17:44,918 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 04:10:09" (1/3) ... [2021-11-07 16:17:44,919 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7dcf6763 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:17:44, skipping insertion in model container [2021-11-07 16:17:44,919 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:10:12" (2/3) ... [2021-11-07 16:17:44,919 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7dcf6763 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:17:44, skipping insertion in model container [2021-11-07 16:17:44,919 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:17:44" (3/3) ... [2021-11-07 16:17:44,920 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--ips.ko-entry_point.cil.out.i [2021-11-07 16:17:44,926 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 16:17:44,926 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2021-11-07 16:17:44,980 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 16:17:44,984 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 [2021-11-07 16:17:44,984 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-11-07 16:17:45,079 INFO L276 IsEmpty]: Start isEmpty. Operand has 8778 states, 8605 states have (on average 1.47472399767577) internal successors, (12690), 8616 states have internal predecessors, (12690), 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) [2021-11-07 16:17:45,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-07 16:17:45,104 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:17:45,105 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] [2021-11-07 16:17:45,106 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)] === [2021-11-07 16:17:45,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:17:45,120 INFO L85 PathProgramCache]: Analyzing trace with hash 1609733912, now seen corresponding path program 1 times [2021-11-07 16:17:45,134 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:17:45,135 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820552139] [2021-11-07 16:17:45,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:17:45,136 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:17:45,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:17:45,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 16:17:45,906 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:17:45,907 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820552139] [2021-11-07 16:17:45,907 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820552139] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:17:45,907 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:17:45,911 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 16:17:45,913 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192679190] [2021-11-07 16:17:45,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:17:45,917 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 16:17:45,917 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:17:45,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 16:17:45,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 16:17:45,956 INFO L87 Difference]: Start difference. First operand has 8778 states, 8605 states have (on average 1.47472399767577) internal successors, (12690), 8616 states have internal predecessors, (12690), 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) [2021-11-07 16:17:46,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:17:46,257 INFO L93 Difference]: Finished difference Result 17528 states and 25983 transitions. [2021-11-07 16:17:46,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 16:17:46,259 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 [2021-11-07 16:17:46,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:17:46,312 INFO L225 Difference]: With dead ends: 17528 [2021-11-07 16:17:46,312 INFO L226 Difference]: Without dead ends: 8466 [2021-11-07 16:17:46,382 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.02ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 16:17:46,385 INFO L933 BasicCegarLoop]: 12831 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 12831 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 17.15ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-07 16:17:46,386 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 12831 Invalid, 0 Unknown, 0 Unchecked, 17.15ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-07 16:17:46,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8466 states. [2021-11-07 16:17:46,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8466 to 8466. [2021-11-07 16:17:46,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8466 states, 8294 states have (on average 1.4475524475524475) internal successors, (12006), 8304 states have internal predecessors, (12006), 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) [2021-11-07 16:17:46,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8466 states to 8466 states and 12262 transitions. [2021-11-07 16:17:46,646 INFO L78 Accepts]: Start accepts. Automaton has 8466 states and 12262 transitions. Word has length 64 [2021-11-07 16:17:46,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:17:46,647 INFO L470 AbstractCegarLoop]: Abstraction has 8466 states and 12262 transitions. [2021-11-07 16:17:46,647 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) [2021-11-07 16:17:46,648 INFO L276 IsEmpty]: Start isEmpty. Operand 8466 states and 12262 transitions. [2021-11-07 16:17:46,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-07 16:17:46,653 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:17:46,653 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] [2021-11-07 16:17:46,654 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 16:17:46,654 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)] === [2021-11-07 16:17:46,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:17:46,656 INFO L85 PathProgramCache]: Analyzing trace with hash 1609001254, now seen corresponding path program 1 times [2021-11-07 16:17:46,656 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:17:46,656 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58280284] [2021-11-07 16:17:46,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:17:46,659 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:17:46,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:17:47,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 16:17:47,185 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:17:47,186 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58280284] [2021-11-07 16:17:47,186 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [58280284] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:17:47,186 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:17:47,186 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 16:17:47,186 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121865866] [2021-11-07 16:17:47,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:17:47,188 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 16:17:47,188 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:17:47,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 16:17:47,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:17:47,189 INFO L87 Difference]: Start difference. First operand 8466 states and 12262 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) [2021-11-07 16:17:47,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:17:47,644 INFO L93 Difference]: Finished difference Result 25059 states and 36338 transitions. [2021-11-07 16:17:47,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 16:17:47,645 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 [2021-11-07 16:17:47,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:17:47,750 INFO L225 Difference]: With dead ends: 25059 [2021-11-07 16:17:47,751 INFO L226 Difference]: Without dead ends: 16637 [2021-11-07 16:17:47,793 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.48ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:17:47,794 INFO L933 BasicCegarLoop]: 13756 mSDtfsCounter, 11903 mSDsluCounter, 12201 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 101.81ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 11903 SdHoareTripleChecker+Valid, 25957 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 32.54ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 120.22ms IncrementalHoareTripleChecker+Time [2021-11-07 16:17:47,795 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11903 Valid, 25957 Invalid, 15 Unknown, 0 Unchecked, 32.54ms Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 120.22ms Time] [2021-11-07 16:17:47,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16637 states. [2021-11-07 16:17:48,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16637 to 16626. [2021-11-07 16:17:48,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16626 states, 16289 states have (on average 1.4493216280925778) internal successors, (23608), 16305 states have internal predecessors, (23608), 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) [2021-11-07 16:17:48,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16626 states to 16626 states and 24116 transitions. [2021-11-07 16:17:48,151 INFO L78 Accepts]: Start accepts. Automaton has 16626 states and 24116 transitions. Word has length 64 [2021-11-07 16:17:48,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:17:48,151 INFO L470 AbstractCegarLoop]: Abstraction has 16626 states and 24116 transitions. [2021-11-07 16:17:48,151 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) [2021-11-07 16:17:48,151 INFO L276 IsEmpty]: Start isEmpty. Operand 16626 states and 24116 transitions. [2021-11-07 16:17:48,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-07 16:17:48,162 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:17:48,162 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] [2021-11-07 16:17:48,162 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 16:17:48,162 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)] === [2021-11-07 16:17:48,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:17:48,163 INFO L85 PathProgramCache]: Analyzing trace with hash 81393114, now seen corresponding path program 1 times [2021-11-07 16:17:48,163 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:17:48,163 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315202987] [2021-11-07 16:17:48,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:17:48,164 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:17:48,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:17:48,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 16:17:48,509 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:17:48,510 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315202987] [2021-11-07 16:17:48,510 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315202987] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:17:48,510 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:17:48,510 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 16:17:48,510 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567534398] [2021-11-07 16:17:48,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:17:48,511 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 16:17:48,511 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:17:48,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 16:17:48,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:17:48,511 INFO L87 Difference]: Start difference. First operand 16626 states and 24116 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) [2021-11-07 16:17:49,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:17:49,156 INFO L93 Difference]: Finished difference Result 48632 states and 71092 transitions. [2021-11-07 16:17:49,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 16:17:49,157 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 [2021-11-07 16:17:49,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:17:49,279 INFO L225 Difference]: With dead ends: 48632 [2021-11-07 16:17:49,283 INFO L226 Difference]: Without dead ends: 32050 [2021-11-07 16:17:49,375 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.84ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:17:49,376 INFO L933 BasicCegarLoop]: 12738 mSDtfsCounter, 11545 mSDsluCounter, 12245 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 147.80ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 11545 SdHoareTripleChecker+Valid, 24983 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 38.26ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 175.18ms IncrementalHoareTripleChecker+Time [2021-11-07 16:17:49,377 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11545 Valid, 24983 Invalid, 79 Unknown, 0 Unchecked, 38.26ms Time], IncrementalHoareTripleChecker [4 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 175.18ms Time] [2021-11-07 16:17:49,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32050 states. [2021-11-07 16:17:49,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32050 to 31989. [2021-11-07 16:17:49,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31989 states, 31343 states have (on average 1.4511693201033724) internal successors, (45484), 31366 states have internal predecessors, (45484), 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) [2021-11-07 16:17:50,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31989 states to 31989 states and 46939 transitions. [2021-11-07 16:17:50,087 INFO L78 Accepts]: Start accepts. Automaton has 31989 states and 46939 transitions. Word has length 81 [2021-11-07 16:17:50,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:17:50,089 INFO L470 AbstractCegarLoop]: Abstraction has 31989 states and 46939 transitions. [2021-11-07 16:17:50,090 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) [2021-11-07 16:17:50,090 INFO L276 IsEmpty]: Start isEmpty. Operand 31989 states and 46939 transitions. [2021-11-07 16:17:50,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-07 16:17:50,099 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:17:50,099 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] [2021-11-07 16:17:50,099 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-07 16:17:50,101 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)] === [2021-11-07 16:17:50,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:17:50,102 INFO L85 PathProgramCache]: Analyzing trace with hash 1365929328, now seen corresponding path program 1 times [2021-11-07 16:17:50,102 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:17:50,102 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604271547] [2021-11-07 16:17:50,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:17:50,102 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:17:50,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:17:50,416 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 16:17:50,416 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:17:50,416 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604271547] [2021-11-07 16:17:50,416 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604271547] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:17:50,416 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:17:50,416 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 16:17:50,417 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590616723] [2021-11-07 16:17:50,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:17:50,418 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 16:17:50,418 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:17:50,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 16:17:50,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 16:17:50,419 INFO L87 Difference]: Start difference. First operand 31989 states and 46939 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) [2021-11-07 16:17:52,511 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 16:17:53,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:17:53,214 INFO L93 Difference]: Finished difference Result 63940 states and 93839 transitions. [2021-11-07 16:17:53,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 16:17:53,215 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 [2021-11-07 16:17:53,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:17:53,326 INFO L225 Difference]: With dead ends: 63940 [2021-11-07 16:17:53,327 INFO L226 Difference]: Without dead ends: 31979 [2021-11-07 16:17:53,470 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.52ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 16:17:53,472 INFO L933 BasicCegarLoop]: 12260 mSDtfsCounter, 3 mSDsluCounter, 24514 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2085.61ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 36774 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 23.86ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2214.15ms IncrementalHoareTripleChecker+Time [2021-11-07 16:17:53,472 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 36774 Invalid, 12 Unknown, 0 Unchecked, 23.86ms Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 1 Unknown, 0 Unchecked, 2214.15ms Time] [2021-11-07 16:17:53,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31979 states. [2021-11-07 16:17:54,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31979 to 31979. [2021-11-07 16:17:54,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31979 states, 31333 states have (on average 1.4511218204448983) internal successors, (45468), 31356 states have internal predecessors, (45468), 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) [2021-11-07 16:17:54,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31979 states to 31979 states and 46923 transitions. [2021-11-07 16:17:54,286 INFO L78 Accepts]: Start accepts. Automaton has 31979 states and 46923 transitions. Word has length 83 [2021-11-07 16:17:54,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:17:54,288 INFO L470 AbstractCegarLoop]: Abstraction has 31979 states and 46923 transitions. [2021-11-07 16:17:54,288 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) [2021-11-07 16:17:54,288 INFO L276 IsEmpty]: Start isEmpty. Operand 31979 states and 46923 transitions. [2021-11-07 16:17:54,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-07 16:17:54,299 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:17:54,299 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] [2021-11-07 16:17:54,299 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-07 16:17:54,300 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)] === [2021-11-07 16:17:54,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:17:54,300 INFO L85 PathProgramCache]: Analyzing trace with hash 849014434, now seen corresponding path program 1 times [2021-11-07 16:17:54,300 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:17:54,300 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738612526] [2021-11-07 16:17:54,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:17:54,301 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:17:54,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:17:54,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 16:17:54,599 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:17:54,599 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738612526] [2021-11-07 16:17:54,599 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738612526] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:17:54,599 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:17:54,599 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 16:17:54,599 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140945284] [2021-11-07 16:17:54,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:17:54,600 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 16:17:54,600 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:17:54,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 16:17:54,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:17:54,601 INFO L87 Difference]: Start difference. First operand 31979 states and 46923 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) [2021-11-07 16:17:55,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:17:55,435 INFO L93 Difference]: Finished difference Result 95769 states and 140547 transitions. [2021-11-07 16:17:55,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 16:17:55,435 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 [2021-11-07 16:17:55,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:17:55,658 INFO L225 Difference]: With dead ends: 95769 [2021-11-07 16:17:55,658 INFO L226 Difference]: Without dead ends: 63834 [2021-11-07 16:17:55,886 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.94ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:17:55,886 INFO L933 BasicCegarLoop]: 14591 mSDtfsCounter, 12218 mSDsluCounter, 12205 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 83.77ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 12218 SdHoareTripleChecker+Valid, 26796 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 18.29ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 98.26ms IncrementalHoareTripleChecker+Time [2021-11-07 16:17:55,890 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12218 Valid, 26796 Invalid, 8 Unknown, 0 Unchecked, 18.29ms Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 98.26ms Time] [2021-11-07 16:17:55,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63834 states. [2021-11-07 16:17:56,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63834 to 63824. [2021-11-07 16:17:56,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63824 states, 62541 states have (on average 1.4512719655905726) internal successors, (90764), 62583 states have internal predecessors, (90764), 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) [2021-11-07 16:17:57,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63824 states to 63824 states and 93662 transitions. [2021-11-07 16:17:57,952 INFO L78 Accepts]: Start accepts. Automaton has 63824 states and 93662 transitions. Word has length 92 [2021-11-07 16:17:57,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:17:57,971 INFO L470 AbstractCegarLoop]: Abstraction has 63824 states and 93662 transitions. [2021-11-07 16:17:57,971 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) [2021-11-07 16:17:57,971 INFO L276 IsEmpty]: Start isEmpty. Operand 63824 states and 93662 transitions. [2021-11-07 16:17:57,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-07 16:17:57,996 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:17:57,996 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] [2021-11-07 16:17:57,996 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-07 16:17:57,997 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)] === [2021-11-07 16:17:57,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:17:57,998 INFO L85 PathProgramCache]: Analyzing trace with hash 1943028586, now seen corresponding path program 1 times [2021-11-07 16:17:57,998 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:17:57,998 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880930792] [2021-11-07 16:17:57,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:17:57,999 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:17:58,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:17:58,774 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 16:17:58,774 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:17:58,774 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880930792] [2021-11-07 16:17:58,774 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880930792] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:17:58,775 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:17:58,775 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 16:17:58,775 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621798529] [2021-11-07 16:17:58,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:17:58,776 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 16:17:58,776 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:17:58,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 16:17:58,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:17:58,776 INFO L87 Difference]: Start difference. First operand 63824 states and 93662 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) [2021-11-07 16:18:00,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:18:00,458 INFO L93 Difference]: Finished difference Result 132228 states and 195501 transitions. [2021-11-07 16:18:00,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 16:18:00,459 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 [2021-11-07 16:18:00,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:18:00,903 INFO L225 Difference]: With dead ends: 132228 [2021-11-07 16:18:00,903 INFO L226 Difference]: Without dead ends: 68448 [2021-11-07 16:18:01,333 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.93ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:18:01,337 INFO L933 BasicCegarLoop]: 12316 mSDtfsCounter, 768 mSDsluCounter, 12241 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 35.32ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 771 SdHoareTripleChecker+Valid, 24557 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 16.29ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 41.75ms IncrementalHoareTripleChecker+Time [2021-11-07 16:18:01,337 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [771 Valid, 24557 Invalid, 33 Unknown, 0 Unchecked, 16.29ms Time], IncrementalHoareTripleChecker [3 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 41.75ms Time] [2021-11-07 16:18:01,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68448 states. [2021-11-07 16:18:02,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68448 to 63840. [2021-11-07 16:18:02,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63840 states, 62557 states have (on average 1.4511565452307496) internal successors, (90780), 62599 states have internal predecessors, (90780), 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) [2021-11-07 16:18:02,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63840 states to 63840 states and 93678 transitions. [2021-11-07 16:18:02,977 INFO L78 Accepts]: Start accepts. Automaton has 63840 states and 93678 transitions. Word has length 92 [2021-11-07 16:18:02,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:18:02,978 INFO L470 AbstractCegarLoop]: Abstraction has 63840 states and 93678 transitions. [2021-11-07 16:18:02,978 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) [2021-11-07 16:18:02,978 INFO L276 IsEmpty]: Start isEmpty. Operand 63840 states and 93678 transitions. [2021-11-07 16:18:02,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-07 16:18:02,992 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:18:02,992 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] [2021-11-07 16:18:02,993 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-07 16:18:02,993 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)] === [2021-11-07 16:18:02,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:18:02,993 INFO L85 PathProgramCache]: Analyzing trace with hash 309060204, now seen corresponding path program 1 times [2021-11-07 16:18:02,993 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:18:02,994 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59083948] [2021-11-07 16:18:02,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:18:02,994 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:18:03,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:18:03,328 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 16:18:03,329 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:18:03,329 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59083948] [2021-11-07 16:18:03,329 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59083948] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:18:03,329 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:18:03,329 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 16:18:03,329 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643053995] [2021-11-07 16:18:03,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:18:03,330 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 16:18:03,330 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:18:03,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 16:18:03,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:18:03,330 INFO L87 Difference]: Start difference. First operand 63840 states and 93678 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) [2021-11-07 16:18:05,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:18:05,265 INFO L93 Difference]: Finished difference Result 123146 states and 182280 transitions. [2021-11-07 16:18:05,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 16:18:05,266 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 [2021-11-07 16:18:05,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:18:05,679 INFO L225 Difference]: With dead ends: 123146 [2021-11-07 16:18:05,680 INFO L226 Difference]: Without dead ends: 123138 [2021-11-07 16:18:05,733 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.78ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:18:05,735 INFO L933 BasicCegarLoop]: 13403 mSDtfsCounter, 11420 mSDsluCounter, 12092 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 55.38ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 11420 SdHoareTripleChecker+Valid, 25495 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 20.85ms SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 69.60ms IncrementalHoareTripleChecker+Time [2021-11-07 16:18:05,735 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11420 Valid, 25495 Invalid, 60 Unknown, 0 Unchecked, 20.85ms Time], IncrementalHoareTripleChecker [30 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 69.60ms Time] [2021-11-07 16:18:05,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123138 states. [2021-11-07 16:18:08,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123138 to 122938. [2021-11-07 16:18:08,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122938 states, 120641 states have (on average 1.4508168864648006) internal successors, (175028), 120657 states have internal predecessors, (175028), 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) [2021-11-07 16:18:09,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122938 states to 122938 states and 181972 transitions. [2021-11-07 16:18:09,178 INFO L78 Accepts]: Start accepts. Automaton has 122938 states and 181972 transitions. Word has length 96 [2021-11-07 16:18:09,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:18:09,178 INFO L470 AbstractCegarLoop]: Abstraction has 122938 states and 181972 transitions. [2021-11-07 16:18:09,178 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) [2021-11-07 16:18:09,179 INFO L276 IsEmpty]: Start isEmpty. Operand 122938 states and 181972 transitions. [2021-11-07 16:18:09,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-11-07 16:18:09,298 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:18:09,298 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] [2021-11-07 16:18:09,299 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-07 16:18:09,299 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)] === [2021-11-07 16:18:09,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:18:09,299 INFO L85 PathProgramCache]: Analyzing trace with hash 1830442181, now seen corresponding path program 1 times [2021-11-07 16:18:09,299 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:18:09,300 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574140757] [2021-11-07 16:18:09,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:18:09,300 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:18:09,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:18:09,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 16:18:09,593 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:18:09,593 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574140757] [2021-11-07 16:18:09,593 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574140757] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:18:09,593 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:18:09,594 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 16:18:09,594 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419561619] [2021-11-07 16:18:09,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:18:09,594 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 16:18:09,594 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:18:09,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 16:18:09,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 16:18:09,595 INFO L87 Difference]: Start difference. First operand 122938 states and 181972 transitions. Second operand has 4 states, 4 states have (on average 29.75) internal successors, (119), 3 states have internal predecessors, (119), 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) [2021-11-07 16:18:18,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:18:18,614 INFO L93 Difference]: Finished difference Result 383710 states and 591366 transitions. [2021-11-07 16:18:18,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 16:18:18,615 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 3 states have internal predecessors, (119), 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) Word has length 126 [2021-11-07 16:18:18,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:18:20,042 INFO L225 Difference]: With dead ends: 383710 [2021-11-07 16:18:20,042 INFO L226 Difference]: Without dead ends: 260816 [2021-11-07 16:18:22,083 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.16ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 16:18:22,084 INFO L933 BasicCegarLoop]: 15128 mSDtfsCounter, 13787 mSDsluCounter, 25194 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 284.52ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 13809 SdHoareTripleChecker+Valid, 40322 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 35.18ms SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 329.09ms IncrementalHoareTripleChecker+Time [2021-11-07 16:18:22,084 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13809 Valid, 40322 Invalid, 220 Unknown, 0 Unchecked, 35.18ms Time], IncrementalHoareTripleChecker [92 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 329.09ms Time] [2021-11-07 16:18:22,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260816 states.