./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-08_1a-drivers--block--loop.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_600d4568-21f0-4f95-af81-26010dc8dfc0/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_600d4568-21f0-4f95-af81-26010dc8dfc0/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_600d4568-21f0-4f95-af81-26010dc8dfc0/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_600d4568-21f0-4f95-af81-26010dc8dfc0/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--block--loop.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_600d4568-21f0-4f95-af81-26010dc8dfc0/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_600d4568-21f0-4f95-af81-26010dc8dfc0/bin/utaipan-Q6hlc19bkW --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 Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash b45d894549c3d959709f16d175c155effcb8f4008755bf9537dca57ce5b6aecf --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-4e7fbc6 [2022-11-23 13:50:07,284 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 13:50:07,287 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 13:50:07,332 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 13:50:07,332 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 13:50:07,336 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 13:50:07,339 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 13:50:07,342 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 13:50:07,344 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 13:50:07,350 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 13:50:07,352 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 13:50:07,354 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 13:50:07,355 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 13:50:07,357 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 13:50:07,359 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 13:50:07,362 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 13:50:07,363 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 13:50:07,364 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 13:50:07,366 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 13:50:07,374 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 13:50:07,376 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 13:50:07,378 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 13:50:07,380 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 13:50:07,380 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 13:50:07,390 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 13:50:07,390 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 13:50:07,390 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 13:50:07,391 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 13:50:07,392 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 13:50:07,393 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 13:50:07,393 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 13:50:07,394 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 13:50:07,395 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 13:50:07,395 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 13:50:07,396 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 13:50:07,397 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 13:50:07,397 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 13:50:07,398 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 13:50:07,398 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 13:50:07,404 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 13:50:07,404 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 13:50:07,405 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_600d4568-21f0-4f95-af81-26010dc8dfc0/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-23 13:50:07,456 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 13:50:07,456 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 13:50:07,457 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 13:50:07,457 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 13:50:07,458 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 13:50:07,459 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 13:50:07,459 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 13:50:07,459 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 13:50:07,459 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 13:50:07,460 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 13:50:07,461 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 13:50:07,461 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 13:50:07,461 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 13:50:07,461 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 13:50:07,462 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 13:50:07,462 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 13:50:07,462 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 13:50:07,462 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 13:50:07,464 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 13:50:07,464 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 13:50:07,464 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 13:50:07,464 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 13:50:07,465 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 13:50:07,465 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 13:50:07,465 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 13:50:07,465 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 13:50:07,466 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 13:50:07,466 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 13:50:07,466 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 13:50:07,467 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 13:50:07,467 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 13:50:07,467 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 13:50:07,467 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 13:50:07,468 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 13:50:07,468 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 13:50:07,468 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 13:50:07,468 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 13:50:07,469 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 13:50:07,469 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_600d4568-21f0-4f95-af81-26010dc8dfc0/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_600d4568-21f0-4f95-af81-26010dc8dfc0/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b45d894549c3d959709f16d175c155effcb8f4008755bf9537dca57ce5b6aecf [2022-11-23 13:50:07,765 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 13:50:07,787 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 13:50:07,789 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 13:50:07,791 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 13:50:07,791 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 13:50:07,793 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_600d4568-21f0-4f95-af81-26010dc8dfc0/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--block--loop.ko-entry_point.cil.out.i [2022-11-23 13:50:10,984 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 13:50:11,583 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 13:50:11,583 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_600d4568-21f0-4f95-af81-26010dc8dfc0/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--block--loop.ko-entry_point.cil.out.i [2022-11-23 13:50:11,642 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_600d4568-21f0-4f95-af81-26010dc8dfc0/bin/utaipan-Q6hlc19bkW/data/5aadb7805/287f075c8f564441833f7ea88dc2902c/FLAG6ae7d3ff7 [2022-11-23 13:50:11,660 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_600d4568-21f0-4f95-af81-26010dc8dfc0/bin/utaipan-Q6hlc19bkW/data/5aadb7805/287f075c8f564441833f7ea88dc2902c [2022-11-23 13:50:11,663 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 13:50:11,665 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 13:50:11,668 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 13:50:11,668 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 13:50:11,672 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 13:50:11,673 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:50:11" (1/1) ... [2022-11-23 13:50:11,674 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61c22cd7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:50:11, skipping insertion in model container [2022-11-23 13:50:11,674 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:50:11" (1/1) ... [2022-11-23 13:50:11,682 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 13:50:11,824 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 13:50:14,010 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_600d4568-21f0-4f95-af81-26010dc8dfc0/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--block--loop.ko-entry_point.cil.out.i[237426,237439] [2022-11-23 13:50:14,052 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 13:50:14,089 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 13:50:14,531 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_600d4568-21f0-4f95-af81-26010dc8dfc0/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--block--loop.ko-entry_point.cil.out.i[237426,237439] [2022-11-23 13:50:14,545 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 13:50:14,664 INFO L208 MainTranslator]: Completed translation [2022-11-23 13:50:14,665 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:50:14 WrapperNode [2022-11-23 13:50:14,665 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 13:50:14,666 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 13:50:14,667 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 13:50:14,667 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 13:50:14,674 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:50:14" (1/1) ... [2022-11-23 13:50:14,816 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:50:14" (1/1) ... [2022-11-23 13:50:14,987 INFO L138 Inliner]: procedures = 311, calls = 2050, calls flagged for inlining = 159, calls inlined = 157, statements flattened = 5633 [2022-11-23 13:50:14,988 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 13:50:14,989 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 13:50:14,989 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 13:50:14,989 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 13:50:14,999 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:50:14" (1/1) ... [2022-11-23 13:50:14,999 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:50:14" (1/1) ... [2022-11-23 13:50:15,046 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:50:14" (1/1) ... [2022-11-23 13:50:15,051 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:50:14" (1/1) ... [2022-11-23 13:50:15,167 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:50:14" (1/1) ... [2022-11-23 13:50:15,185 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:50:14" (1/1) ... [2022-11-23 13:50:15,207 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:50:14" (1/1) ... [2022-11-23 13:50:15,230 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:50:14" (1/1) ... [2022-11-23 13:50:15,275 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 13:50:15,277 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 13:50:15,277 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 13:50:15,277 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 13:50:15,278 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:50:14" (1/1) ... [2022-11-23 13:50:15,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 13:50:15,295 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_600d4568-21f0-4f95-af81-26010dc8dfc0/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 13:50:15,312 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_600d4568-21f0-4f95-af81-26010dc8dfc0/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 13:50:15,340 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_600d4568-21f0-4f95-af81-26010dc8dfc0/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 13:50:15,361 INFO L130 BoogieDeclarations]: Found specification of procedure __kuid_val [2022-11-23 13:50:15,361 INFO L138 BoogieDeclarations]: Found implementation of procedure __kuid_val [2022-11-23 13:50:15,361 INFO L130 BoogieDeclarations]: Found specification of procedure loop_add [2022-11-23 13:50:15,361 INFO L138 BoogieDeclarations]: Found implementation of procedure loop_add [2022-11-23 13:50:15,361 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-23 13:50:15,362 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-23 13:50:15,362 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-23 13:50:15,362 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-23 13:50:15,362 INFO L130 BoogieDeclarations]: Found specification of procedure iov_iter_bvec [2022-11-23 13:50:15,362 INFO L138 BoogieDeclarations]: Found implementation of procedure iov_iter_bvec [2022-11-23 13:50:15,363 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-23 13:50:15,363 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-23 13:50:15,363 INFO L130 BoogieDeclarations]: Found specification of procedure file_inode [2022-11-23 13:50:15,363 INFO L138 BoogieDeclarations]: Found implementation of procedure file_inode [2022-11-23 13:50:15,363 INFO L130 BoogieDeclarations]: Found specification of procedure loop_control_ioctl [2022-11-23 13:50:15,363 INFO L138 BoogieDeclarations]: Found implementation of procedure loop_control_ioctl [2022-11-23 13:50:15,364 INFO L130 BoogieDeclarations]: Found specification of procedure debug_lockdep_rcu_enabled [2022-11-23 13:50:15,364 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_lockdep_rcu_enabled [2022-11-23 13:50:15,364 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2022-11-23 13:50:15,364 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2022-11-23 13:50:15,364 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-23 13:50:15,365 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-23 13:50:15,365 INFO L130 BoogieDeclarations]: Found specification of procedure kobject_uevent [2022-11-23 13:50:15,365 INFO L138 BoogieDeclarations]: Found implementation of procedure kobject_uevent [2022-11-23 13:50:15,365 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_put [2022-11-23 13:50:15,366 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_put [2022-11-23 13:50:15,367 INFO L130 BoogieDeclarations]: Found specification of procedure loop_remove [2022-11-23 13:50:15,367 INFO L138 BoogieDeclarations]: Found implementation of procedure loop_remove [2022-11-23 13:50:15,368 INFO L130 BoogieDeclarations]: Found specification of procedure transfer_xor [2022-11-23 13:50:15,368 INFO L138 BoogieDeclarations]: Found implementation of procedure transfer_xor [2022-11-23 13:50:15,368 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-23 13:50:15,368 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-23 13:50:15,368 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-23 13:50:15,368 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-23 13:50:15,369 INFO L130 BoogieDeclarations]: Found specification of procedure huge_encode_dev [2022-11-23 13:50:15,369 INFO L138 BoogieDeclarations]: Found implementation of procedure huge_encode_dev [2022-11-23 13:50:15,369 INFO L130 BoogieDeclarations]: Found specification of procedure lo_do_transfer [2022-11-23 13:50:15,369 INFO L138 BoogieDeclarations]: Found implementation of procedure lo_do_transfer [2022-11-23 13:50:15,370 INFO L130 BoogieDeclarations]: Found specification of procedure blk_mq_unfreeze_queue [2022-11-23 13:50:15,370 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_mq_unfreeze_queue [2022-11-23 13:50:15,370 INFO L130 BoogieDeclarations]: Found specification of procedure activate_work_2 [2022-11-23 13:50:15,370 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_work_2 [2022-11-23 13:50:15,370 INFO L130 BoogieDeclarations]: Found specification of procedure lo_compat_ioctl [2022-11-23 13:50:15,371 INFO L138 BoogieDeclarations]: Found implementation of procedure lo_compat_ioctl [2022-11-23 13:50:15,371 INFO L130 BoogieDeclarations]: Found specification of procedure set_capacity [2022-11-23 13:50:15,371 INFO L138 BoogieDeclarations]: Found implementation of procedure set_capacity [2022-11-23 13:50:15,371 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2022-11-23 13:50:15,371 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2022-11-23 13:50:15,372 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-23 13:50:15,372 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-23 13:50:15,373 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-23 13:50:15,373 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-23 13:50:15,374 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR_OR_NULL [2022-11-23 13:50:15,374 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR_OR_NULL [2022-11-23 13:50:15,374 INFO L130 BoogieDeclarations]: Found specification of procedure loop_get_status [2022-11-23 13:50:15,374 INFO L138 BoogieDeclarations]: Found implementation of procedure loop_get_status [2022-11-23 13:50:15,374 INFO L130 BoogieDeclarations]: Found specification of procedure loop_handle_cmd [2022-11-23 13:50:15,375 INFO L138 BoogieDeclarations]: Found implementation of procedure loop_handle_cmd [2022-11-23 13:50:15,375 INFO L130 BoogieDeclarations]: Found specification of procedure loop_clr_fd [2022-11-23 13:50:15,375 INFO L138 BoogieDeclarations]: Found implementation of procedure loop_clr_fd [2022-11-23 13:50:15,375 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 13:50:15,375 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-23 13:50:15,375 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-23 13:50:15,376 INFO L130 BoogieDeclarations]: Found specification of procedure figure_loop_size [2022-11-23 13:50:15,376 INFO L138 BoogieDeclarations]: Found implementation of procedure figure_loop_size [2022-11-23 13:50:15,376 INFO L130 BoogieDeclarations]: Found specification of procedure get_size [2022-11-23 13:50:15,376 INFO L138 BoogieDeclarations]: Found implementation of procedure get_size [2022-11-23 13:50:15,376 INFO L130 BoogieDeclarations]: Found specification of procedure blk_mq_rq_to_pdu [2022-11-23 13:50:15,377 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_mq_rq_to_pdu [2022-11-23 13:50:15,377 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_pages [2022-11-23 13:50:15,377 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_pages [2022-11-23 13:50:15,377 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-23 13:50:15,378 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2022-11-23 13:50:15,378 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_work_2 [2022-11-23 13:50:15,379 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_work_2 [2022-11-23 13:50:15,379 INFO L130 BoogieDeclarations]: Found specification of procedure __free_pages [2022-11-23 13:50:15,379 INFO L138 BoogieDeclarations]: Found implementation of procedure __free_pages [2022-11-23 13:50:15,380 INFO L130 BoogieDeclarations]: Found specification of procedure lo_write_bvec [2022-11-23 13:50:15,380 INFO L138 BoogieDeclarations]: Found implementation of procedure lo_write_bvec [2022-11-23 13:50:15,380 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 13:50:15,381 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-23 13:50:15,381 INFO L130 BoogieDeclarations]: Found specification of procedure capable [2022-11-23 13:50:15,381 INFO L138 BoogieDeclarations]: Found implementation of procedure capable [2022-11-23 13:50:15,381 INFO L130 BoogieDeclarations]: Found specification of procedure __might_fault [2022-11-23 13:50:15,382 INFO L138 BoogieDeclarations]: Found implementation of procedure __might_fault [2022-11-23 13:50:15,382 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work_on [2022-11-23 13:50:15,382 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work_on [2022-11-23 13:50:15,382 INFO L130 BoogieDeclarations]: Found specification of procedure loop_set_status_old [2022-11-23 13:50:15,382 INFO L138 BoogieDeclarations]: Found implementation of procedure loop_set_status_old [2022-11-23 13:50:15,382 INFO L130 BoogieDeclarations]: Found specification of procedure fput [2022-11-23 13:50:15,383 INFO L138 BoogieDeclarations]: Found implementation of procedure fput [2022-11-23 13:50:15,383 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2022-11-23 13:50:15,384 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2022-11-23 13:50:15,384 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2022-11-23 13:50:15,384 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2022-11-23 13:50:15,384 INFO L130 BoogieDeclarations]: Found specification of procedure loop_reread_partitions [2022-11-23 13:50:15,385 INFO L138 BoogieDeclarations]: Found implementation of procedure loop_reread_partitions [2022-11-23 13:50:15,385 INFO L130 BoogieDeclarations]: Found specification of procedure nonseekable_open [2022-11-23 13:50:15,385 INFO L130 BoogieDeclarations]: Found specification of procedure loop_set_capacity [2022-11-23 13:50:15,386 INFO L138 BoogieDeclarations]: Found implementation of procedure loop_set_capacity [2022-11-23 13:50:15,386 INFO L130 BoogieDeclarations]: Found specification of procedure vfs_iter_read [2022-11-23 13:50:15,386 INFO L138 BoogieDeclarations]: Found implementation of procedure vfs_iter_read [2022-11-23 13:50:15,386 INFO L130 BoogieDeclarations]: Found specification of procedure idr_for_each [2022-11-23 13:50:15,386 INFO L138 BoogieDeclarations]: Found implementation of procedure idr_for_each [2022-11-23 13:50:15,447 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-23 13:50:15,447 INFO L130 BoogieDeclarations]: Found specification of procedure blk_mq_free_tag_set [2022-11-23 13:50:15,447 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_mq_free_tag_set [2022-11-23 13:50:15,448 INFO L130 BoogieDeclarations]: Found specification of procedure ___might_sleep [2022-11-23 13:50:15,448 INFO L138 BoogieDeclarations]: Found implementation of procedure ___might_sleep [2022-11-23 13:50:15,448 INFO L130 BoogieDeclarations]: Found specification of procedure misc_deregister [2022-11-23 13:50:15,448 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_deregister [2022-11-23 13:50:15,448 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2022-11-23 13:50:15,448 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2022-11-23 13:50:15,448 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-23 13:50:15,448 INFO L130 BoogieDeclarations]: Found specification of procedure bio_advance_iter [2022-11-23 13:50:15,448 INFO L138 BoogieDeclarations]: Found implementation of procedure bio_advance_iter [2022-11-23 13:50:15,449 INFO L130 BoogieDeclarations]: Found specification of procedure loop_queue_write_work [2022-11-23 13:50:15,449 INFO L138 BoogieDeclarations]: Found implementation of procedure loop_queue_write_work [2022-11-23 13:50:15,449 INFO L130 BoogieDeclarations]: Found specification of procedure bd_set_size [2022-11-23 13:50:15,449 INFO L138 BoogieDeclarations]: Found implementation of procedure bd_set_size [2022-11-23 13:50:15,449 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-23 13:50:15,449 INFO L130 BoogieDeclarations]: Found specification of procedure fget [2022-11-23 13:50:15,449 INFO L138 BoogieDeclarations]: Found implementation of procedure fget [2022-11-23 13:50:15,449 INFO L130 BoogieDeclarations]: Found specification of procedure mapping_set_gfp_mask [2022-11-23 13:50:15,449 INFO L138 BoogieDeclarations]: Found implementation of procedure mapping_set_gfp_mask [2022-11-23 13:50:15,450 INFO L130 BoogieDeclarations]: Found specification of procedure xor_init [2022-11-23 13:50:15,450 INFO L138 BoogieDeclarations]: Found implementation of procedure xor_init [2022-11-23 13:50:15,450 INFO L130 BoogieDeclarations]: Found specification of procedure loop_set_status64 [2022-11-23 13:50:15,450 INFO L138 BoogieDeclarations]: Found implementation of procedure loop_set_status64 [2022-11-23 13:50:15,450 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-23 13:50:15,450 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-23 13:50:15,450 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_release_11 [2022-11-23 13:50:15,450 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_release_11 [2022-11-23 13:50:15,450 INFO L130 BoogieDeclarations]: Found specification of procedure zero_fill_bio [2022-11-23 13:50:15,451 INFO L138 BoogieDeclarations]: Found implementation of procedure zero_fill_bio [2022-11-23 13:50:15,451 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-23 13:50:15,451 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-23 13:50:15,451 INFO L130 BoogieDeclarations]: Found specification of procedure loop_attr_show [2022-11-23 13:50:15,451 INFO L138 BoogieDeclarations]: Found implementation of procedure loop_attr_show [2022-11-23 13:50:15,451 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-23 13:50:15,451 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2022-11-23 13:50:15,453 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2022-11-23 13:50:15,454 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-23 13:50:15,454 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-23 13:50:15,454 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2022-11-23 13:50:15,454 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2022-11-23 13:50:15,454 INFO L130 BoogieDeclarations]: Found specification of procedure __read_once_size [2022-11-23 13:50:15,454 INFO L138 BoogieDeclarations]: Found implementation of procedure __read_once_size [2022-11-23 13:50:15,454 INFO L130 BoogieDeclarations]: Found specification of procedure blk_mq_freeze_queue [2022-11-23 13:50:15,454 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_mq_freeze_queue [2022-11-23 13:50:15,454 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-11-23 13:50:15,455 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-11-23 13:50:15,455 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-23 13:50:15,455 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2022-11-23 13:50:15,455 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2022-11-23 13:50:15,455 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2022-11-23 13:50:15,455 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2022-11-23 13:50:15,455 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 13:50:15,455 INFO L130 BoogieDeclarations]: Found specification of procedure get_loop_size [2022-11-23 13:50:15,455 INFO L138 BoogieDeclarations]: Found implementation of procedure get_loop_size [2022-11-23 13:50:15,456 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-23 13:50:15,456 INFO L130 BoogieDeclarations]: Found specification of procedure blk_cleanup_queue [2022-11-23 13:50:15,456 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_cleanup_queue [2022-11-23 13:50:15,456 INFO L130 BoogieDeclarations]: Found specification of procedure loop_set_status [2022-11-23 13:50:15,456 INFO L138 BoogieDeclarations]: Found implementation of procedure loop_set_status [2022-11-23 13:50:15,456 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-23 13:50:15,456 INFO L130 BoogieDeclarations]: Found specification of procedure lo_ioctl [2022-11-23 13:50:15,456 INFO L138 BoogieDeclarations]: Found implementation of procedure lo_ioctl [2022-11-23 13:50:15,456 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2022-11-23 13:50:15,457 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2022-11-23 13:50:15,457 INFO L130 BoogieDeclarations]: Found specification of procedure ___ratelimit [2022-11-23 13:50:15,457 INFO L138 BoogieDeclarations]: Found implementation of procedure ___ratelimit [2022-11-23 13:50:15,457 INFO L130 BoogieDeclarations]: Found specification of procedure idr_alloc [2022-11-23 13:50:15,457 INFO L138 BoogieDeclarations]: Found implementation of procedure idr_alloc [2022-11-23 13:50:15,457 INFO L130 BoogieDeclarations]: Found specification of procedure loop_release_xfer [2022-11-23 13:50:15,457 INFO L138 BoogieDeclarations]: Found implementation of procedure loop_release_xfer [2022-11-23 13:50:15,457 INFO L130 BoogieDeclarations]: Found specification of procedure _cond_resched [2022-11-23 13:50:15,457 INFO L138 BoogieDeclarations]: Found implementation of procedure _cond_resched [2022-11-23 13:50:15,458 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2022-11-23 13:50:15,458 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2022-11-23 13:50:15,458 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_all_2 [2022-11-23 13:50:15,458 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_all_2 [2022-11-23 13:50:15,458 INFO L130 BoogieDeclarations]: Found specification of procedure loop_switch [2022-11-23 13:50:15,460 INFO L138 BoogieDeclarations]: Found implementation of procedure loop_switch [2022-11-23 13:50:15,461 INFO L130 BoogieDeclarations]: Found specification of procedure loop_queue_read_work [2022-11-23 13:50:15,461 INFO L138 BoogieDeclarations]: Found implementation of procedure loop_queue_read_work [2022-11-23 13:50:15,461 INFO L130 BoogieDeclarations]: Found specification of procedure kmap_atomic [2022-11-23 13:50:15,461 INFO L138 BoogieDeclarations]: Found implementation of procedure kmap_atomic [2022-11-23 13:50:15,461 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2022-11-23 13:50:15,461 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2022-11-23 13:50:15,462 INFO L130 BoogieDeclarations]: Found specification of procedure mapping_gfp_mask [2022-11-23 13:50:15,462 INFO L138 BoogieDeclarations]: Found implementation of procedure mapping_gfp_mask [2022-11-23 13:50:15,462 INFO L130 BoogieDeclarations]: Found specification of procedure idr_remove [2022-11-23 13:50:15,462 INFO L138 BoogieDeclarations]: Found implementation of procedure idr_remove [2022-11-23 13:50:15,462 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-11-23 13:50:15,463 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-11-23 13:50:15,463 INFO L130 BoogieDeclarations]: Found specification of procedure __kunmap_atomic [2022-11-23 13:50:15,463 INFO L138 BoogieDeclarations]: Found implementation of procedure __kunmap_atomic [2022-11-23 13:50:15,463 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 13:50:15,463 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work [2022-11-23 13:50:15,463 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work [2022-11-23 13:50:15,464 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 13:50:15,464 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 13:50:15,464 INFO L130 BoogieDeclarations]: Found specification of procedure loop_lookup [2022-11-23 13:50:15,464 INFO L138 BoogieDeclarations]: Found implementation of procedure loop_lookup [2022-11-23 13:50:15,464 INFO L130 BoogieDeclarations]: Found specification of procedure loop_queue_rq [2022-11-23 13:50:15,464 INFO L138 BoogieDeclarations]: Found implementation of procedure loop_queue_rq [2022-11-23 13:50:16,394 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 13:50:16,403 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 13:50:17,004 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-23 13:50:27,078 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 13:50:28,577 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 13:50:28,577 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-23 13:50:28,585 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:50:28 BoogieIcfgContainer [2022-11-23 13:50:28,585 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 13:50:28,589 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 13:50:28,589 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 13:50:28,592 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 13:50:28,593 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 01:50:11" (1/3) ... [2022-11-23 13:50:28,595 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c028bff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:50:28, skipping insertion in model container [2022-11-23 13:50:28,595 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:50:14" (2/3) ... [2022-11-23 13:50:28,597 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c028bff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:50:28, skipping insertion in model container [2022-11-23 13:50:28,597 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:50:28" (3/3) ... [2022-11-23 13:50:28,599 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-08_1a-drivers--block--loop.ko-entry_point.cil.out.i [2022-11-23 13:50:28,622 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 13:50:28,623 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 13:50:28,724 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 13:50:28,733 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@4da2d0be, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 13:50:28,733 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 13:50:28,745 INFO L276 IsEmpty]: Start isEmpty. Operand has 1252 states, 794 states have (on average 1.3614609571788414) internal successors, (1081), 829 states have internal predecessors, (1081), 363 states have call successors, (363), 94 states have call predecessors, (363), 93 states have return successors, (350), 348 states have call predecessors, (350), 350 states have call successors, (350) [2022-11-23 13:50:28,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 523 [2022-11-23 13:50:28,797 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:50:28,799 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 24, 24, 24, 24, 24, 24, 24, 23, 23, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:50:28,799 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 13:50:28,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:50:28,808 INFO L85 PathProgramCache]: Analyzing trace with hash 1487285746, now seen corresponding path program 1 times [2022-11-23 13:50:28,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:50:28,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604046079] [2022-11-23 13:50:28,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:50:28,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:50:29,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:50:30,568 INFO L134 CoverageAnalysis]: Checked inductivity of 4531 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4531 trivial. 0 not checked. [2022-11-23 13:50:30,569 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:50:30,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604046079] [2022-11-23 13:50:30,570 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604046079] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:50:30,571 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:50:30,571 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 13:50:30,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262059556] [2022-11-23 13:50:30,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:50:30,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 13:50:30,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:50:30,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 13:50:30,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 13:50:30,632 INFO L87 Difference]: Start difference. First operand has 1252 states, 794 states have (on average 1.3614609571788414) internal successors, (1081), 829 states have internal predecessors, (1081), 363 states have call successors, (363), 94 states have call predecessors, (363), 93 states have return successors, (350), 348 states have call predecessors, (350), 350 states have call successors, (350) Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (53), 2 states have call predecessors, (53), 1 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) [2022-11-23 13:50:32,719 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 13:50:37,197 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 13:50:39,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:50:39,863 INFO L93 Difference]: Finished difference Result 3522 states and 5078 transitions. [2022-11-23 13:50:39,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 13:50:39,867 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (53), 2 states have call predecessors, (53), 1 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) Word has length 522 [2022-11-23 13:50:39,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:50:39,912 INFO L225 Difference]: With dead ends: 3522 [2022-11-23 13:50:39,913 INFO L226 Difference]: Without dead ends: 2339 [2022-11-23 13:50:39,935 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 13:50:39,940 INFO L413 NwaCegarLoop]: 1884 mSDtfsCounter, 1610 mSDsluCounter, 1556 mSDsCounter, 0 mSdLazyCounter, 406 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1610 SdHoareTripleChecker+Valid, 3440 SdHoareTripleChecker+Invalid, 410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 406 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time [2022-11-23 13:50:39,944 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1610 Valid, 3440 Invalid, 410 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 406 Invalid, 1 Unknown, 0 Unchecked, 8.8s Time] [2022-11-23 13:50:39,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2339 states. [2022-11-23 13:50:40,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2339 to 2336. [2022-11-23 13:50:40,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2336 states, 1512 states have (on average 1.3531746031746033) internal successors, (2046), 1551 states have internal predecessors, (2046), 640 states have call successors, (640), 184 states have call predecessors, (640), 183 states have return successors, (638), 634 states have call predecessors, (638), 638 states have call successors, (638) [2022-11-23 13:50:40,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2336 states to 2336 states and 3324 transitions. [2022-11-23 13:50:40,192 INFO L78 Accepts]: Start accepts. Automaton has 2336 states and 3324 transitions. Word has length 522 [2022-11-23 13:50:40,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:50:40,198 INFO L495 AbstractCegarLoop]: Abstraction has 2336 states and 3324 transitions. [2022-11-23 13:50:40,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (53), 2 states have call predecessors, (53), 1 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) [2022-11-23 13:50:40,199 INFO L276 IsEmpty]: Start isEmpty. Operand 2336 states and 3324 transitions. [2022-11-23 13:50:40,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 539 [2022-11-23 13:50:40,213 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:50:40,214 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 24, 24, 24, 24, 24, 24, 24, 23, 23, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:50:40,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 13:50:40,215 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 13:50:40,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:50:40,215 INFO L85 PathProgramCache]: Analyzing trace with hash -2093840609, now seen corresponding path program 1 times [2022-11-23 13:50:40,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:50:40,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539909769] [2022-11-23 13:50:40,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:50:40,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:50:40,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:50:41,137 INFO L134 CoverageAnalysis]: Checked inductivity of 4531 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4531 trivial. 0 not checked. [2022-11-23 13:50:41,138 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:50:41,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539909769] [2022-11-23 13:50:41,138 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539909769] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:50:41,138 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:50:41,139 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 13:50:41,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959351647] [2022-11-23 13:50:41,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:50:41,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 13:50:41,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:50:41,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 13:50:41,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 13:50:41,143 INFO L87 Difference]: Start difference. First operand 2336 states and 3324 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (56), 2 states have call predecessors, (56), 1 states have return successors, (53), 2 states have call predecessors, (53), 2 states have call successors, (53) [2022-11-23 13:50:44,641 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 13:50:48,192 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 13:50:49,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:50:49,192 INFO L93 Difference]: Finished difference Result 5850 states and 8290 transitions. [2022-11-23 13:50:49,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 13:50:49,194 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (56), 2 states have call predecessors, (56), 1 states have return successors, (53), 2 states have call predecessors, (53), 2 states have call successors, (53) Word has length 538 [2022-11-23 13:50:49,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:50:49,223 INFO L225 Difference]: With dead ends: 5850 [2022-11-23 13:50:49,224 INFO L226 Difference]: Without dead ends: 3613 [2022-11-23 13:50:49,237 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 13:50:49,238 INFO L413 NwaCegarLoop]: 1723 mSDtfsCounter, 1048 mSDsluCounter, 1401 mSDsCounter, 0 mSdLazyCounter, 417 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1048 SdHoareTripleChecker+Valid, 3124 SdHoareTripleChecker+Invalid, 419 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2022-11-23 13:50:49,238 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1048 Valid, 3124 Invalid, 419 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 417 Invalid, 0 Unknown, 0 Unchecked, 7.8s Time] [2022-11-23 13:50:49,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3613 states. [2022-11-23 13:50:49,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3613 to 3603. [2022-11-23 13:50:49,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3603 states, 2358 states have (on average 1.3625954198473282) internal successors, (3213), 2410 states have internal predecessors, (3213), 945 states have call successors, (945), 300 states have call predecessors, (945), 299 states have return successors, (943), 936 states have call predecessors, (943), 943 states have call successors, (943) [2022-11-23 13:50:49,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3603 states to 3603 states and 5101 transitions. [2022-11-23 13:50:49,457 INFO L78 Accepts]: Start accepts. Automaton has 3603 states and 5101 transitions. Word has length 538 [2022-11-23 13:50:49,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:50:49,459 INFO L495 AbstractCegarLoop]: Abstraction has 3603 states and 5101 transitions. [2022-11-23 13:50:49,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (56), 2 states have call predecessors, (56), 1 states have return successors, (53), 2 states have call predecessors, (53), 2 states have call successors, (53) [2022-11-23 13:50:49,460 INFO L276 IsEmpty]: Start isEmpty. Operand 3603 states and 5101 transitions. [2022-11-23 13:50:49,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 543 [2022-11-23 13:50:49,479 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:50:49,479 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 26, 26, 26, 26, 26, 26, 26, 23, 23, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:50:49,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 13:50:49,480 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 13:50:49,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:50:49,490 INFO L85 PathProgramCache]: Analyzing trace with hash -1982106081, now seen corresponding path program 1 times [2022-11-23 13:50:49,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:50:49,490 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017092962] [2022-11-23 13:50:49,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:50:49,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:50:49,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:50:50,426 INFO L134 CoverageAnalysis]: Checked inductivity of 5021 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5021 trivial. 0 not checked. [2022-11-23 13:50:50,426 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:50:50,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017092962] [2022-11-23 13:50:50,428 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017092962] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:50:50,428 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:50:50,429 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 13:50:50,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063822571] [2022-11-23 13:50:50,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:50:50,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 13:50:50,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:50:50,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 13:50:50,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 13:50:50,433 INFO L87 Difference]: Start difference. First operand 3603 states and 5101 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 3 states have call successors, (53), 2 states have call predecessors, (53), 1 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) [2022-11-23 13:50:53,118 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 13:50:56,915 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 13:50:59,246 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 13:50:59,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:50:59,296 INFO L93 Difference]: Finished difference Result 10508 states and 14920 transitions. [2022-11-23 13:50:59,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 13:50:59,297 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 3 states have call successors, (53), 2 states have call predecessors, (53), 1 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) Word has length 542 [2022-11-23 13:50:59,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:50:59,342 INFO L225 Difference]: With dead ends: 10508 [2022-11-23 13:50:59,343 INFO L226 Difference]: Without dead ends: 7006 [2022-11-23 13:50:59,359 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 13:50:59,360 INFO L413 NwaCegarLoop]: 1981 mSDtfsCounter, 1575 mSDsluCounter, 1428 mSDsCounter, 0 mSdLazyCounter, 419 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1575 SdHoareTripleChecker+Valid, 3409 SdHoareTripleChecker+Invalid, 421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 419 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.6s IncrementalHoareTripleChecker+Time [2022-11-23 13:50:59,361 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1575 Valid, 3409 Invalid, 421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 419 Invalid, 1 Unknown, 0 Unchecked, 8.6s Time] [2022-11-23 13:50:59,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7006 states. [2022-11-23 13:50:59,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7006 to 7002. [2022-11-23 13:50:59,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7002 states, 4599 states have (on average 1.365514242226571) internal successors, (6280), 4697 states have internal predecessors, (6280), 1809 states have call successors, (1809), 594 states have call predecessors, (1809), 593 states have return successors, (1831), 1794 states have call predecessors, (1831), 1807 states have call successors, (1831) [2022-11-23 13:50:59,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7002 states to 7002 states and 9920 transitions. [2022-11-23 13:50:59,696 INFO L78 Accepts]: Start accepts. Automaton has 7002 states and 9920 transitions. Word has length 542 [2022-11-23 13:50:59,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:50:59,699 INFO L495 AbstractCegarLoop]: Abstraction has 7002 states and 9920 transitions. [2022-11-23 13:50:59,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 3 states have call successors, (53), 2 states have call predecessors, (53), 1 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) [2022-11-23 13:50:59,702 INFO L276 IsEmpty]: Start isEmpty. Operand 7002 states and 9920 transitions. [2022-11-23 13:50:59,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 606 [2022-11-23 13:50:59,720 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:50:59,720 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 28, 28, 28, 28, 28, 28, 28, 23, 23, 23, 23, 23, 23, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:50:59,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 13:50:59,721 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 13:50:59,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:50:59,722 INFO L85 PathProgramCache]: Analyzing trace with hash -1510387481, now seen corresponding path program 1 times [2022-11-23 13:50:59,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:50:59,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214125879] [2022-11-23 13:50:59,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:50:59,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:51:00,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:51:01,159 INFO L134 CoverageAnalysis]: Checked inductivity of 5562 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 5551 trivial. 0 not checked. [2022-11-23 13:51:01,160 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:51:01,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214125879] [2022-11-23 13:51:01,160 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214125879] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:51:01,160 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:51:01,160 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 13:51:01,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696811133] [2022-11-23 13:51:01,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:51:01,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 13:51:01,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:51:01,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 13:51:01,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 13:51:01,163 INFO L87 Difference]: Start difference. First operand 7002 states and 9920 transitions. Second operand has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (60), 2 states have call predecessors, (60), 1 states have return successors, (57), 2 states have call predecessors, (57), 2 states have call successors, (57) [2022-11-23 13:51:03,195 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 13:51:09,581 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 13:51:10,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:51:10,449 INFO L93 Difference]: Finished difference Result 13907 states and 19697 transitions. [2022-11-23 13:51:10,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 13:51:10,450 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (60), 2 states have call predecessors, (60), 1 states have return successors, (57), 2 states have call predecessors, (57), 2 states have call successors, (57) Word has length 605 [2022-11-23 13:51:10,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:51:10,498 INFO L225 Difference]: With dead ends: 13907 [2022-11-23 13:51:10,499 INFO L226 Difference]: Without dead ends: 7011 [2022-11-23 13:51:10,531 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 13:51:10,533 INFO L413 NwaCegarLoop]: 1564 mSDtfsCounter, 8 mSDsluCounter, 3118 mSDsCounter, 0 mSdLazyCounter, 606 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 4682 SdHoareTripleChecker+Invalid, 608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 606 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.9s IncrementalHoareTripleChecker+Time [2022-11-23 13:51:10,533 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 4682 Invalid, 608 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 606 Invalid, 1 Unknown, 0 Unchecked, 8.9s Time] [2022-11-23 13:51:10,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7011 states. [2022-11-23 13:51:10,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7011 to 7004. [2022-11-23 13:51:10,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7004 states, 4601 states have (on average 1.3649206694196914) internal successors, (6280), 4699 states have internal predecessors, (6280), 1809 states have call successors, (1809), 594 states have call predecessors, (1809), 593 states have return successors, (1831), 1794 states have call predecessors, (1831), 1807 states have call successors, (1831) [2022-11-23 13:51:10,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7004 states to 7004 states and 9920 transitions. [2022-11-23 13:51:10,903 INFO L78 Accepts]: Start accepts. Automaton has 7004 states and 9920 transitions. Word has length 605 [2022-11-23 13:51:10,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:51:10,904 INFO L495 AbstractCegarLoop]: Abstraction has 7004 states and 9920 transitions. [2022-11-23 13:51:10,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (60), 2 states have call predecessors, (60), 1 states have return successors, (57), 2 states have call predecessors, (57), 2 states have call successors, (57) [2022-11-23 13:51:10,905 INFO L276 IsEmpty]: Start isEmpty. Operand 7004 states and 9920 transitions. [2022-11-23 13:51:10,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 612 [2022-11-23 13:51:10,925 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:51:10,925 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 28, 28, 28, 28, 28, 28, 28, 23, 23, 23, 23, 23, 23, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:51:10,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-23 13:51:10,926 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 13:51:10,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:51:10,927 INFO L85 PathProgramCache]: Analyzing trace with hash -2014325050, now seen corresponding path program 1 times [2022-11-23 13:51:10,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:51:10,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024747764] [2022-11-23 13:51:10,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:51:10,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:51:11,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:51:12,111 INFO L134 CoverageAnalysis]: Checked inductivity of 5562 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 5551 trivial. 0 not checked. [2022-11-23 13:51:12,112 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:51:12,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024747764] [2022-11-23 13:51:12,112 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024747764] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:51:12,112 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:51:12,112 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 13:51:12,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557595695] [2022-11-23 13:51:12,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:51:12,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 13:51:12,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:51:12,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 13:51:12,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 13:51:12,115 INFO L87 Difference]: Start difference. First operand 7004 states and 9920 transitions. Second operand has 5 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 3 states have call successors, (61), 2 states have call predecessors, (61), 1 states have return successors, (58), 3 states have call predecessors, (58), 3 states have call successors, (58) [2022-11-23 13:51:14,267 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 13:51:16,282 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 13:51:21,372 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 13:51:25,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:51:25,829 INFO L93 Difference]: Finished difference Result 13923 states and 19713 transitions. [2022-11-23 13:51:25,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 13:51:25,830 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 3 states have call successors, (61), 2 states have call predecessors, (61), 1 states have return successors, (58), 3 states have call predecessors, (58), 3 states have call successors, (58) Word has length 611 [2022-11-23 13:51:25,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:51:25,874 INFO L225 Difference]: With dead ends: 13923 [2022-11-23 13:51:25,874 INFO L226 Difference]: Without dead ends: 7019 [2022-11-23 13:51:25,903 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-23 13:51:25,904 INFO L413 NwaCegarLoop]: 1566 mSDtfsCounter, 13 mSDsluCounter, 4680 mSDsCounter, 0 mSdLazyCounter, 811 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 6246 SdHoareTripleChecker+Invalid, 814 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 811 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.4s IncrementalHoareTripleChecker+Time [2022-11-23 13:51:25,905 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 6246 Invalid, 814 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 811 Invalid, 1 Unknown, 0 Unchecked, 13.4s Time] [2022-11-23 13:51:25,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7019 states. [2022-11-23 13:51:26,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7019 to 7009. [2022-11-23 13:51:26,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7009 states, 4604 states have (on average 1.3638140747176368) internal successors, (6279), 4703 states have internal predecessors, (6279), 1811 states have call successors, (1811), 594 states have call predecessors, (1811), 593 states have return successors, (1833), 1795 states have call predecessors, (1833), 1809 states have call successors, (1833) [2022-11-23 13:51:26,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7009 states to 7009 states and 9923 transitions. [2022-11-23 13:51:26,208 INFO L78 Accepts]: Start accepts. Automaton has 7009 states and 9923 transitions. Word has length 611 [2022-11-23 13:51:26,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:51:26,210 INFO L495 AbstractCegarLoop]: Abstraction has 7009 states and 9923 transitions. [2022-11-23 13:51:26,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 3 states have call successors, (61), 2 states have call predecessors, (61), 1 states have return successors, (58), 3 states have call predecessors, (58), 3 states have call successors, (58) [2022-11-23 13:51:26,210 INFO L276 IsEmpty]: Start isEmpty. Operand 7009 states and 9923 transitions. [2022-11-23 13:51:26,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 614 [2022-11-23 13:51:26,221 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:51:26,222 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 28, 28, 28, 28, 28, 28, 28, 23, 23, 23, 23, 23, 23, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:51:26,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-23 13:51:26,222 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 13:51:26,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:51:26,223 INFO L85 PathProgramCache]: Analyzing trace with hash 828922454, now seen corresponding path program 1 times [2022-11-23 13:51:26,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:51:26,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211105184] [2022-11-23 13:51:26,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:51:26,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:51:26,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:51:27,378 INFO L134 CoverageAnalysis]: Checked inductivity of 5562 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 5551 trivial. 0 not checked. [2022-11-23 13:51:27,378 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:51:27,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211105184] [2022-11-23 13:51:27,379 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211105184] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:51:27,379 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:51:27,379 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 13:51:27,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884679484] [2022-11-23 13:51:27,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:51:27,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 13:51:27,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:51:27,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 13:51:27,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 13:51:27,381 INFO L87 Difference]: Start difference. First operand 7009 states and 9923 transitions. Second operand has 5 states, 5 states have (on average 23.8) internal successors, (119), 5 states have internal predecessors, (119), 3 states have call successors, (61), 2 states have call predecessors, (61), 1 states have return successors, (58), 3 states have call predecessors, (58), 3 states have call successors, (58) [2022-11-23 13:51:30,441 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 13:51:34,850 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 13:51:36,308 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 13:51:38,410 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 13:51:40,781 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 13:51:42,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:51:42,260 INFO L93 Difference]: Finished difference Result 13923 states and 19705 transitions. [2022-11-23 13:51:42,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 13:51:42,261 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.8) internal successors, (119), 5 states have internal predecessors, (119), 3 states have call successors, (61), 2 states have call predecessors, (61), 1 states have return successors, (58), 3 states have call predecessors, (58), 3 states have call successors, (58) Word has length 613 [2022-11-23 13:51:42,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:51:42,296 INFO L225 Difference]: With dead ends: 13923 [2022-11-23 13:51:42,297 INFO L226 Difference]: Without dead ends: 7010 [2022-11-23 13:51:42,325 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-23 13:51:42,326 INFO L413 NwaCegarLoop]: 1565 mSDtfsCounter, 13 mSDsluCounter, 4676 mSDsCounter, 0 mSdLazyCounter, 807 mSolverCounterSat, 3 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 6241 SdHoareTripleChecker+Invalid, 812 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 807 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.7s IncrementalHoareTripleChecker+Time [2022-11-23 13:51:42,327 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 6241 Invalid, 812 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 807 Invalid, 2 Unknown, 0 Unchecked, 14.7s Time] [2022-11-23 13:51:42,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7010 states. [2022-11-23 13:51:42,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7010 to 6989. [2022-11-23 13:51:42,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6989 states, 4592 states have (on average 1.3643292682926829) internal successors, (6265), 4690 states have internal predecessors, (6265), 1806 states have call successors, (1806), 591 states have call predecessors, (1806), 590 states have return successors, (1828), 1791 states have call predecessors, (1828), 1804 states have call successors, (1828) [2022-11-23 13:51:42,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6989 states to 6989 states and 9899 transitions. [2022-11-23 13:51:42,631 INFO L78 Accepts]: Start accepts. Automaton has 6989 states and 9899 transitions. Word has length 613 [2022-11-23 13:51:42,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:51:42,632 INFO L495 AbstractCegarLoop]: Abstraction has 6989 states and 9899 transitions. [2022-11-23 13:51:42,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.8) internal successors, (119), 5 states have internal predecessors, (119), 3 states have call successors, (61), 2 states have call predecessors, (61), 1 states have return successors, (58), 3 states have call predecessors, (58), 3 states have call successors, (58) [2022-11-23 13:51:42,633 INFO L276 IsEmpty]: Start isEmpty. Operand 6989 states and 9899 transitions. [2022-11-23 13:51:42,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 624 [2022-11-23 13:51:42,645 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:51:42,645 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 28, 28, 28, 28, 28, 28, 28, 23, 23, 23, 23, 23, 23, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:51:42,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-23 13:51:42,646 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 13:51:42,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:51:42,647 INFO L85 PathProgramCache]: Analyzing trace with hash -1383678000, now seen corresponding path program 1 times [2022-11-23 13:51:42,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:51:42,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615156402] [2022-11-23 13:51:42,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:51:42,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:51:42,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:51:44,341 INFO L134 CoverageAnalysis]: Checked inductivity of 5564 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 5553 trivial. 0 not checked. [2022-11-23 13:51:44,341 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:51:44,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615156402] [2022-11-23 13:51:44,342 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615156402] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:51:44,342 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:51:44,342 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 13:51:44,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597115424] [2022-11-23 13:51:44,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:51:44,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 13:51:44,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:51:44,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 13:51:44,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-23 13:51:44,345 INFO L87 Difference]: Start difference. First operand 6989 states and 9899 transitions. Second operand has 5 states, 5 states have (on average 25.0) internal successors, (125), 5 states have internal predecessors, (125), 4 states have call successors, (63), 2 states have call predecessors, (63), 1 states have return successors, (59), 4 states have call predecessors, (59), 4 states have call successors, (59) [2022-11-23 13:51:46,670 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.97s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 13:51:52,928 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.60s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 13:51:54,157 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 13:51:56,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:51:56,152 INFO L93 Difference]: Finished difference Result 14045 states and 19927 transitions. [2022-11-23 13:51:56,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 13:51:56,153 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.0) internal successors, (125), 5 states have internal predecessors, (125), 4 states have call successors, (63), 2 states have call predecessors, (63), 1 states have return successors, (59), 4 states have call predecessors, (59), 4 states have call successors, (59) Word has length 623 [2022-11-23 13:51:56,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:51:56,185 INFO L225 Difference]: With dead ends: 14045 [2022-11-23 13:51:56,185 INFO L226 Difference]: Without dead ends: 7166 [2022-11-23 13:51:56,204 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-23 13:51:56,205 INFO L413 NwaCegarLoop]: 1760 mSDtfsCounter, 1927 mSDsluCounter, 3282 mSDsCounter, 0 mSdLazyCounter, 720 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1927 SdHoareTripleChecker+Valid, 5042 SdHoareTripleChecker+Invalid, 785 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 720 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.5s IncrementalHoareTripleChecker+Time [2022-11-23 13:51:56,205 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1927 Valid, 5042 Invalid, 785 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 720 Invalid, 0 Unknown, 0 Unchecked, 11.5s Time] [2022-11-23 13:51:56,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7166 states. [2022-11-23 13:51:56,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7166 to 6993. [2022-11-23 13:51:56,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6993 states, 4596 states have (on average 1.3635770234986946) internal successors, (6267), 4694 states have internal predecessors, (6267), 1806 states have call successors, (1806), 591 states have call predecessors, (1806), 590 states have return successors, (1828), 1791 states have call predecessors, (1828), 1804 states have call successors, (1828) [2022-11-23 13:51:56,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6993 states to 6993 states and 9901 transitions. [2022-11-23 13:51:56,546 INFO L78 Accepts]: Start accepts. Automaton has 6993 states and 9901 transitions. Word has length 623 [2022-11-23 13:51:56,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:51:56,548 INFO L495 AbstractCegarLoop]: Abstraction has 6993 states and 9901 transitions. [2022-11-23 13:51:56,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.0) internal successors, (125), 5 states have internal predecessors, (125), 4 states have call successors, (63), 2 states have call predecessors, (63), 1 states have return successors, (59), 4 states have call predecessors, (59), 4 states have call successors, (59) [2022-11-23 13:51:56,548 INFO L276 IsEmpty]: Start isEmpty. Operand 6993 states and 9901 transitions. [2022-11-23 13:51:56,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 632 [2022-11-23 13:51:56,563 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:51:56,564 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 28, 28, 28, 28, 28, 28, 28, 23, 23, 23, 23, 23, 23, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:51:56,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-23 13:51:56,564 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 13:51:56,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:51:56,565 INFO L85 PathProgramCache]: Analyzing trace with hash -1671523671, now seen corresponding path program 1 times [2022-11-23 13:51:56,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:51:56,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465942728] [2022-11-23 13:51:56,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:51:56,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:51:56,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:51:58,429 INFO L134 CoverageAnalysis]: Checked inductivity of 5569 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 5557 trivial. 0 not checked. [2022-11-23 13:51:58,430 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:51:58,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465942728] [2022-11-23 13:51:58,430 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465942728] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 13:51:58,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1120939218] [2022-11-23 13:51:58,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:51:58,431 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 13:51:58,431 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_600d4568-21f0-4f95-af81-26010dc8dfc0/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 13:51:58,438 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_600d4568-21f0-4f95-af81-26010dc8dfc0/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 13:51:58,444 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_600d4568-21f0-4f95-af81-26010dc8dfc0/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 13:52:00,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:52:00,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 6044 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-23 13:52:00,546 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 13:52:02,009 INFO L134 CoverageAnalysis]: Checked inductivity of 5569 backedges. 537 proven. 1 refuted. 0 times theorem prover too weak. 5031 trivial. 0 not checked. [2022-11-23 13:52:02,009 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 13:52:03,486 INFO L134 CoverageAnalysis]: Checked inductivity of 5569 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 5557 trivial. 0 not checked. [2022-11-23 13:52:03,486 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1120939218] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 13:52:03,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [838803226] [2022-11-23 13:52:03,530 INFO L159 IcfgInterpreter]: Started Sifa with 190 locations of interest [2022-11-23 13:52:03,530 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 13:52:03,534 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 13:52:03,539 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 13:52:03,539 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 13:52:06,947 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 301 treesize of output 258 [2022-11-23 13:52:09,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:52:09,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:52:09,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:52:09,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:52:09,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:52:09,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:52:09,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:52:09,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:52:09,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:52:09,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:52:09,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:52:09,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:52:09,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:52:09,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:52:09,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:52:09,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:52:09,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:52:09,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:52:09,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:52:09,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:52:09,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:52:09,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:52:09,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:52:10,447 INFO L217 Elim1Store]: Index analysis took 3020 ms [2022-11-23 13:59:41,183 WARN L233 SmtUtils]: Spent 7.51m on a formula simplification. DAG size of input: 5660 DAG size of output: 1923 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-23 13:59:41,197 INFO L321 Elim1Store]: treesize reduction 70705, result has 6.7 percent of original size [2022-11-23 13:59:41,199 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 64 select indices, 64 select index equivalence classes, 2062 disjoint index pairs (out of 2016 index pairs), introduced 64 new quantified variables, introduced 85 case distinctions, treesize of input 393 treesize of output 5264 [2022-11-23 13:59:48,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:59:48,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:59:48,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:59:48,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:59:48,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:59:48,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:59:48,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:59:48,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:59:48,831 INFO L217 Elim1Store]: Index analysis took 146 ms [2022-11-23 13:59:51,114 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 77 select indices, 77 select index equivalence classes, 249 disjoint index pairs (out of 2926 index pairs), introduced 77 new quantified variables, introduced 0 case distinctions, treesize of input 592 treesize of output 808 [2022-11-23 13:59:53,413 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 293 treesize of output 250 [2022-11-23 14:00:13,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:00:22,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:00:33,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:00:37,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:00:49,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:00:54,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:01:02,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:01:06,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:01:11,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:01:18,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:01:22,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:01:26,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:01:28,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:01:32,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:01:33,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:01:35,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:01:40,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:01:43,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:01:44,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:01:44,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:01:44,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:01:44,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:01:44,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:01:46,928 INFO L217 Elim1Store]: Index analysis took 97496 ms