./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-32_7a-drivers--memstick--core--ms_block.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e44c3c94-f65a-4c00-a39e-17e079a4df44/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e44c3c94-f65a-4c00-a39e-17e079a4df44/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e44c3c94-f65a-4c00-a39e-17e079a4df44/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e44c3c94-f65a-4c00-a39e-17e079a4df44/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--memstick--core--ms_block.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e44c3c94-f65a-4c00-a39e-17e079a4df44/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e44c3c94-f65a-4c00-a39e-17e079a4df44/bin/utaipan-I9t0OCRTmS --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 1264b42ba0b5dcb83ee2e2b35dfcd5adbd8a3fb1fa3fff4328b672883ffa55c1 --- 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-8393723 [2022-11-19 07:25:52,361 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 07:25:52,364 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 07:25:52,390 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 07:25:52,391 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 07:25:52,393 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 07:25:52,395 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 07:25:52,397 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 07:25:52,399 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 07:25:52,401 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 07:25:52,402 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 07:25:52,404 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 07:25:52,405 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 07:25:52,406 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 07:25:52,408 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 07:25:52,410 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 07:25:52,411 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 07:25:52,413 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 07:25:52,415 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 07:25:52,418 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 07:25:52,420 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 07:25:52,422 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 07:25:52,423 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 07:25:52,425 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 07:25:52,429 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 07:25:52,430 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 07:25:52,430 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 07:25:52,432 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 07:25:52,432 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 07:25:52,434 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 07:25:52,434 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 07:25:52,436 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 07:25:52,437 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 07:25:52,438 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 07:25:52,440 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 07:25:52,441 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 07:25:52,442 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 07:25:52,442 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 07:25:52,443 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 07:25:52,444 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 07:25:52,445 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 07:25:52,447 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e44c3c94-f65a-4c00-a39e-17e079a4df44/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-19 07:25:52,476 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 07:25:52,476 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 07:25:52,477 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 07:25:52,477 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 07:25:52,478 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 07:25:52,478 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 07:25:52,479 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 07:25:52,479 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 07:25:52,479 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 07:25:52,480 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 07:25:52,480 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 07:25:52,480 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 07:25:52,480 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 07:25:52,481 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 07:25:52,481 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 07:25:52,481 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 07:25:52,482 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 07:25:52,482 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 07:25:52,483 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 07:25:52,483 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 07:25:52,484 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 07:25:52,484 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 07:25:52,484 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 07:25:52,484 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 07:25:52,485 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 07:25:52,485 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 07:25:52,485 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 07:25:52,486 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 07:25:52,486 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 07:25:52,486 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:25:52,487 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 07:25:52,487 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 07:25:52,487 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 07:25:52,488 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 07:25:52,488 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 07:25:52,488 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 07:25:52,488 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 07:25:52,489 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 07:25:52,489 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_e44c3c94-f65a-4c00-a39e-17e079a4df44/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e44c3c94-f65a-4c00-a39e-17e079a4df44/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1264b42ba0b5dcb83ee2e2b35dfcd5adbd8a3fb1fa3fff4328b672883ffa55c1 [2022-11-19 07:25:52,857 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 07:25:52,888 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 07:25:52,891 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 07:25:52,893 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 07:25:52,894 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 07:25:52,896 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e44c3c94-f65a-4c00-a39e-17e079a4df44/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--memstick--core--ms_block.ko-entry_point.cil.out.i [2022-11-19 07:25:52,997 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e44c3c94-f65a-4c00-a39e-17e079a4df44/bin/utaipan-I9t0OCRTmS/data/7fa3d3a60/0c05ba9250c042b9b9b5b60ff67e3ba8/FLAGfc46e8010 [2022-11-19 07:25:54,187 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 07:25:54,188 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e44c3c94-f65a-4c00-a39e-17e079a4df44/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--memstick--core--ms_block.ko-entry_point.cil.out.i [2022-11-19 07:25:54,249 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e44c3c94-f65a-4c00-a39e-17e079a4df44/bin/utaipan-I9t0OCRTmS/data/7fa3d3a60/0c05ba9250c042b9b9b5b60ff67e3ba8/FLAGfc46e8010 [2022-11-19 07:25:54,507 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e44c3c94-f65a-4c00-a39e-17e079a4df44/bin/utaipan-I9t0OCRTmS/data/7fa3d3a60/0c05ba9250c042b9b9b5b60ff67e3ba8 [2022-11-19 07:25:54,512 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 07:25:54,516 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 07:25:54,520 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 07:25:54,521 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 07:25:54,525 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 07:25:54,526 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:25:54" (1/1) ... [2022-11-19 07:25:54,528 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d5671e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:25:54, skipping insertion in model container [2022-11-19 07:25:54,528 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:25:54" (1/1) ... [2022-11-19 07:25:54,540 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 07:25:54,712 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 07:25:56,813 WARN L234 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_e44c3c94-f65a-4c00-a39e-17e079a4df44/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--memstick--core--ms_block.ko-entry_point.cil.out.i[237227,237240] [2022-11-19 07:25:57,053 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:25:57,076 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 07:25:57,486 WARN L234 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_e44c3c94-f65a-4c00-a39e-17e079a4df44/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--memstick--core--ms_block.ko-entry_point.cil.out.i[237227,237240] [2022-11-19 07:25:57,510 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:25:57,680 INFO L208 MainTranslator]: Completed translation [2022-11-19 07:25:57,681 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:25:57 WrapperNode [2022-11-19 07:25:57,681 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 07:25:57,683 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 07:25:57,683 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 07:25:57,683 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 07:25:57,692 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:25:57" (1/1) ... [2022-11-19 07:25:57,791 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:25:57" (1/1) ... [2022-11-19 07:25:57,984 INFO L138 Inliner]: procedures = 306, calls = 1751, calls flagged for inlining = 109, calls inlined = 100, statements flattened = 3796 [2022-11-19 07:25:57,985 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 07:25:57,986 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 07:25:57,987 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 07:25:57,987 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 07:25:58,006 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:25:57" (1/1) ... [2022-11-19 07:25:58,006 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:25:57" (1/1) ... [2022-11-19 07:25:58,048 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:25:57" (1/1) ... [2022-11-19 07:25:58,049 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:25:57" (1/1) ... [2022-11-19 07:25:58,172 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:25:57" (1/1) ... [2022-11-19 07:25:58,192 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:25:57" (1/1) ... [2022-11-19 07:25:58,211 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:25:57" (1/1) ... [2022-11-19 07:25:58,227 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:25:57" (1/1) ... [2022-11-19 07:25:58,259 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 07:25:58,260 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 07:25:58,260 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 07:25:58,260 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 07:25:58,262 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:25:57" (1/1) ... [2022-11-19 07:25:58,271 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:25:58,297 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e44c3c94-f65a-4c00-a39e-17e079a4df44/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:25:58,318 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e44c3c94-f65a-4c00-a39e-17e079a4df44/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 07:25:58,427 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e44c3c94-f65a-4c00-a39e-17e079a4df44/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 07:25:58,455 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab32 [2022-11-19 07:25:58,456 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab32 [2022-11-19 07:25:58,456 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_lock_of_memstick_host [2022-11-19 07:25:58,456 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_lock_of_memstick_host [2022-11-19 07:25:58,457 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2022-11-19 07:25:58,457 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2022-11-19 07:25:58,457 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-19 07:25:58,457 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-19 07:25:58,457 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-19 07:25:58,458 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-19 07:25:58,458 INFO L130 BoogieDeclarations]: Found specification of procedure msb_stop [2022-11-19 07:25:58,458 INFO L138 BoogieDeclarations]: Found implementation of procedure msb_stop [2022-11-19 07:25:58,458 INFO L130 BoogieDeclarations]: Found specification of procedure msb_get_zone_from_pba [2022-11-19 07:25:58,458 INFO L138 BoogieDeclarations]: Found implementation of procedure msb_get_zone_from_pba [2022-11-19 07:25:58,458 INFO L130 BoogieDeclarations]: Found specification of procedure variable_test_bit [2022-11-19 07:25:58,459 INFO L138 BoogieDeclarations]: Found implementation of procedure variable_test_bit [2022-11-19 07:25:58,459 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-19 07:25:58,459 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-19 07:25:58,459 INFO L130 BoogieDeclarations]: Found specification of procedure blk_fetch_request [2022-11-19 07:25:58,459 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_fetch_request [2022-11-19 07:25:58,460 INFO L130 BoogieDeclarations]: Found specification of procedure activate_work_1 [2022-11-19 07:25:58,460 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_work_1 [2022-11-19 07:25:58,460 INFO L130 BoogieDeclarations]: Found specification of procedure arch_local_irq_restore [2022-11-19 07:25:58,460 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_local_irq_restore [2022-11-19 07:25:58,460 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-19 07:25:58,460 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-19 07:25:58,461 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-19 07:25:58,461 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-19 07:25:58,461 INFO L130 BoogieDeclarations]: Found specification of procedure msb_switch_to_parallel [2022-11-19 07:25:58,461 INFO L138 BoogieDeclarations]: Found implementation of procedure msb_switch_to_parallel [2022-11-19 07:25:58,462 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-19 07:25:58,462 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-19 07:25:58,462 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-19 07:25:58,462 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-19 07:25:58,463 INFO L130 BoogieDeclarations]: Found specification of procedure msb_validate_used_block_bitmap [2022-11-19 07:25:58,463 INFO L138 BoogieDeclarations]: Found implementation of procedure msb_validate_used_block_bitmap [2022-11-19 07:25:58,463 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-11-19 07:25:58,464 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-11-19 07:25:58,464 INFO L130 BoogieDeclarations]: Found specification of procedure msb_verify_block [2022-11-19 07:25:58,464 INFO L138 BoogieDeclarations]: Found implementation of procedure msb_verify_block [2022-11-19 07:25:58,464 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-19 07:25:58,464 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-19 07:25:58,464 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_timer_2 [2022-11-19 07:25:58,465 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_timer_2 [2022-11-19 07:25:58,465 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_msb_disk_lock [2022-11-19 07:25:58,465 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_msb_disk_lock [2022-11-19 07:25:58,466 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-19 07:25:58,466 INFO L130 BoogieDeclarations]: Found specification of procedure msb_cache_write [2022-11-19 07:25:58,467 INFO L138 BoogieDeclarations]: Found implementation of procedure msb_cache_write [2022-11-19 07:25:58,468 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-11-19 07:25:58,468 INFO L130 BoogieDeclarations]: Found specification of procedure trace_hardirqs_off [2022-11-19 07:25:58,468 INFO L138 BoogieDeclarations]: Found implementation of procedure trace_hardirqs_off [2022-11-19 07:25:58,470 INFO L130 BoogieDeclarations]: Found specification of procedure memstick_set_drvdata [2022-11-19 07:25:58,470 INFO L138 BoogieDeclarations]: Found implementation of procedure memstick_set_drvdata [2022-11-19 07:25:58,470 INFO L130 BoogieDeclarations]: Found specification of procedure __blk_end_request [2022-11-19 07:25:58,471 INFO L138 BoogieDeclarations]: Found implementation of procedure __blk_end_request [2022-11-19 07:25:58,471 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-19 07:25:58,472 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_work_1 [2022-11-19 07:25:58,472 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_work_1 [2022-11-19 07:25:58,473 INFO L130 BoogieDeclarations]: Found specification of procedure msb_invalidate_reg_window [2022-11-19 07:25:58,473 INFO L138 BoogieDeclarations]: Found implementation of procedure msb_invalidate_reg_window [2022-11-19 07:25:58,473 INFO L130 BoogieDeclarations]: Found specification of procedure msb_io_work [2022-11-19 07:25:58,473 INFO L138 BoogieDeclarations]: Found implementation of procedure msb_io_work [2022-11-19 07:25:58,473 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-19 07:25:58,474 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-19 07:25:58,474 INFO L130 BoogieDeclarations]: Found specification of procedure sg_init_table [2022-11-19 07:25:58,474 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_init_table [2022-11-19 07:25:58,474 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-19 07:25:58,474 INFO L130 BoogieDeclarations]: Found specification of procedure msb_erase_block [2022-11-19 07:25:58,474 INFO L138 BoogieDeclarations]: Found implementation of procedure msb_erase_block [2022-11-19 07:25:58,475 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-19 07:25:58,476 INFO L130 BoogieDeclarations]: Found specification of procedure memstick_get_drvdata [2022-11-19 07:25:58,476 INFO L138 BoogieDeclarations]: Found implementation of procedure memstick_get_drvdata [2022-11-19 07:25:58,476 INFO L130 BoogieDeclarations]: Found specification of procedure msb_data_clear [2022-11-19 07:25:58,476 INFO L138 BoogieDeclarations]: Found implementation of procedure msb_data_clear [2022-11-19 07:25:58,476 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-11-19 07:25:58,477 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-11-19 07:25:58,477 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work_on [2022-11-19 07:25:58,477 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work_on [2022-11-19 07:25:58,477 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-19 07:25:58,477 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-19 07:25:58,477 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2022-11-19 07:25:58,478 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2022-11-19 07:25:58,478 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2022-11-19 07:25:58,479 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2022-11-19 07:25:58,479 INFO L130 BoogieDeclarations]: Found specification of procedure msb_read_bad_block_table [2022-11-19 07:25:58,480 INFO L138 BoogieDeclarations]: Found implementation of procedure msb_read_bad_block_table [2022-11-19 07:25:58,480 INFO L130 BoogieDeclarations]: Found specification of procedure msb_update_block [2022-11-19 07:25:58,482 INFO L138 BoogieDeclarations]: Found implementation of procedure msb_update_block [2022-11-19 07:25:58,482 INFO L130 BoogieDeclarations]: Found specification of procedure msb_cache_flush [2022-11-19 07:25:58,482 INFO L138 BoogieDeclarations]: Found implementation of procedure msb_cache_flush [2022-11-19 07:25:58,482 INFO L130 BoogieDeclarations]: Found specification of procedure sg_miter_next [2022-11-19 07:25:58,483 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_miter_next [2022-11-19 07:25:58,484 INFO L130 BoogieDeclarations]: Found specification of procedure flush_workqueue [2022-11-19 07:25:58,484 INFO L138 BoogieDeclarations]: Found implementation of procedure flush_workqueue [2022-11-19 07:25:58,484 INFO L130 BoogieDeclarations]: Found specification of procedure sg_miter_start [2022-11-19 07:25:58,484 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_miter_start [2022-11-19 07:25:58,484 INFO L130 BoogieDeclarations]: Found specification of procedure msb_run_state_machine [2022-11-19 07:25:58,485 INFO L138 BoogieDeclarations]: Found implementation of procedure msb_run_state_machine [2022-11-19 07:25:58,485 INFO L130 BoogieDeclarations]: Found specification of procedure msb_sg_copy [2022-11-19 07:25:58,485 INFO L138 BoogieDeclarations]: Found implementation of procedure msb_sg_copy [2022-11-19 07:25:58,485 INFO L130 BoogieDeclarations]: Found specification of procedure sg_page [2022-11-19 07:25:58,485 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_page [2022-11-19 07:25:58,486 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-11-19 07:25:58,486 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-11-19 07:25:58,486 INFO L130 BoogieDeclarations]: Found specification of procedure find_next_zero_bit [2022-11-19 07:25:58,487 INFO L138 BoogieDeclarations]: Found implementation of procedure find_next_zero_bit [2022-11-19 07:25:58,487 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_lock_of_memstick_host [2022-11-19 07:25:58,487 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_lock_of_memstick_host [2022-11-19 07:25:58,488 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-19 07:25:58,489 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer_sync [2022-11-19 07:25:58,493 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer_sync [2022-11-19 07:25:58,493 INFO L130 BoogieDeclarations]: Found specification of procedure msb_get_zone_from_lba [2022-11-19 07:25:58,493 INFO L138 BoogieDeclarations]: Found implementation of procedure msb_get_zone_from_lba [2022-11-19 07:25:58,494 INFO L130 BoogieDeclarations]: Found specification of procedure msb_reset [2022-11-19 07:25:58,494 INFO L138 BoogieDeclarations]: Found implementation of procedure msb_reset [2022-11-19 07:25:58,499 INFO L130 BoogieDeclarations]: Found specification of procedure activate_suitable_timer_2 [2022-11-19 07:25:58,501 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_suitable_timer_2 [2022-11-19 07:25:58,502 INFO L130 BoogieDeclarations]: Found specification of procedure blk_start_queue [2022-11-19 07:25:58,502 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_start_queue [2022-11-19 07:25:58,507 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-19 07:25:58,507 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-19 07:25:58,507 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_blkdev [2022-11-19 07:25:58,507 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_blkdev [2022-11-19 07:25:58,508 INFO L130 BoogieDeclarations]: Found specification of procedure msb_bd_getgeo [2022-11-19 07:25:58,508 INFO L138 BoogieDeclarations]: Found implementation of procedure msb_bd_getgeo [2022-11-19 07:25:58,508 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-19 07:25:58,508 INFO L130 BoogieDeclarations]: Found specification of procedure msb_remove [2022-11-19 07:25:58,508 INFO L138 BoogieDeclarations]: Found implementation of procedure msb_remove [2022-11-19 07:25:58,508 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-19 07:25:58,509 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-19 07:25:58,509 INFO L130 BoogieDeclarations]: Found specification of procedure sg_next [2022-11-19 07:25:58,509 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_next [2022-11-19 07:25:58,509 INFO L130 BoogieDeclarations]: Found specification of procedure msb_mark_bad [2022-11-19 07:25:58,509 INFO L138 BoogieDeclarations]: Found implementation of procedure msb_mark_bad [2022-11-19 07:25:58,510 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-11-19 07:25:58,510 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-11-19 07:25:58,510 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-19 07:25:58,510 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_timer_2 [2022-11-19 07:25:58,510 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_timer_2 [2022-11-19 07:25:58,510 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2022-11-19 07:25:58,511 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2022-11-19 07:25:58,511 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 07:25:58,511 INFO L130 BoogieDeclarations]: Found specification of procedure sg_nents [2022-11-19 07:25:58,511 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_nents [2022-11-19 07:25:58,511 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-19 07:25:58,511 INFO L130 BoogieDeclarations]: Found specification of procedure msb_read_page [2022-11-19 07:25:58,512 INFO L138 BoogieDeclarations]: Found implementation of procedure msb_read_page [2022-11-19 07:25:58,512 INFO L130 BoogieDeclarations]: Found specification of procedure __set_bit [2022-11-19 07:25:58,512 INFO L138 BoogieDeclarations]: Found implementation of procedure __set_bit [2022-11-19 07:25:58,512 INFO L130 BoogieDeclarations]: Found specification of procedure sg_miter_stop [2022-11-19 07:25:58,512 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_miter_stop [2022-11-19 07:25:58,512 INFO L130 BoogieDeclarations]: Found specification of procedure msb_set_overwrite_flag [2022-11-19 07:25:58,513 INFO L138 BoogieDeclarations]: Found implementation of procedure msb_set_overwrite_flag [2022-11-19 07:25:58,513 INFO L130 BoogieDeclarations]: Found specification of procedure blk_rq_bytes [2022-11-19 07:25:58,513 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_rq_bytes [2022-11-19 07:25:58,513 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_all_1 [2022-11-19 07:25:58,513 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_all_1 [2022-11-19 07:25:58,513 INFO L130 BoogieDeclarations]: Found specification of procedure msb_disk_release [2022-11-19 07:25:58,514 INFO L138 BoogieDeclarations]: Found implementation of procedure msb_disk_release [2022-11-19 07:25:58,514 INFO L130 BoogieDeclarations]: Found specification of procedure msb_mark_block_used [2022-11-19 07:25:58,514 INFO L138 BoogieDeclarations]: Found implementation of procedure msb_mark_block_used [2022-11-19 07:25:58,514 INFO L130 BoogieDeclarations]: Found specification of procedure msb_cache_discard [2022-11-19 07:25:58,514 INFO L138 BoogieDeclarations]: Found implementation of procedure msb_cache_discard [2022-11-19 07:25:58,514 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-19 07:25:58,515 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-19 07:25:58,515 INFO L130 BoogieDeclarations]: Found specification of procedure msb_start [2022-11-19 07:25:58,515 INFO L138 BoogieDeclarations]: Found implementation of procedure msb_start [2022-11-19 07:25:58,515 INFO L130 BoogieDeclarations]: Found specification of procedure msecs_to_jiffies [2022-11-19 07:25:58,515 INFO L138 BoogieDeclarations]: Found implementation of procedure msecs_to_jiffies [2022-11-19 07:25:58,515 INFO L130 BoogieDeclarations]: Found specification of procedure put_disk [2022-11-19 07:25:58,516 INFO L138 BoogieDeclarations]: Found implementation of procedure put_disk [2022-11-19 07:25:58,516 INFO L130 BoogieDeclarations]: Found specification of procedure idr_remove [2022-11-19 07:25:58,516 INFO L138 BoogieDeclarations]: Found implementation of procedure idr_remove [2022-11-19 07:25:58,516 INFO L130 BoogieDeclarations]: Found specification of procedure msb_init_card [2022-11-19 07:25:58,516 INFO L138 BoogieDeclarations]: Found implementation of procedure msb_init_card [2022-11-19 07:25:58,516 INFO L130 BoogieDeclarations]: Found specification of procedure sg_set_page [2022-11-19 07:25:58,517 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_set_page [2022-11-19 07:25:58,517 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-11-19 07:25:58,518 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-11-19 07:25:58,518 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 07:25:58,518 INFO L130 BoogieDeclarations]: Found specification of procedure sg_init_one [2022-11-19 07:25:58,518 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_init_one [2022-11-19 07:25:58,519 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work [2022-11-19 07:25:58,521 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work [2022-11-19 07:25:58,521 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_msb_disk_lock [2022-11-19 07:25:58,521 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_msb_disk_lock [2022-11-19 07:25:58,521 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 07:25:58,521 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 07:25:59,237 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 07:25:59,241 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 07:25:59,553 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-19 07:26:03,308 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 07:26:04,868 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 07:26:04,868 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-19 07:26:04,874 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:26:04 BoogieIcfgContainer [2022-11-19 07:26:04,875 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 07:26:04,878 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 07:26:04,878 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 07:26:04,884 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 07:26:04,884 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:25:54" (1/3) ... [2022-11-19 07:26:04,885 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f557e1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:26:04, skipping insertion in model container [2022-11-19 07:26:04,886 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:25:57" (2/3) ... [2022-11-19 07:26:04,886 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f557e1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:26:04, skipping insertion in model container [2022-11-19 07:26:04,886 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:26:04" (3/3) ... [2022-11-19 07:26:04,889 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--memstick--core--ms_block.ko-entry_point.cil.out.i [2022-11-19 07:26:04,917 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 07:26:04,917 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 07:26:05,029 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 07:26:05,038 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;@4da529e5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 07:26:05,038 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 07:26:05,049 INFO L276 IsEmpty]: Start isEmpty. Operand has 1151 states, 719 states have (on average 1.3532684283727399) internal successors, (973), 763 states have internal predecessors, (973), 343 states have call successors, (343), 88 states have call predecessors, (343), 87 states have return successors, (337), 331 states have call predecessors, (337), 337 states have call successors, (337) [2022-11-19 07:26:05,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-11-19 07:26:05,066 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:26:05,067 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2022-11-19 07:26:05,068 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:26:05,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:26:05,076 INFO L85 PathProgramCache]: Analyzing trace with hash 1865866182, now seen corresponding path program 1 times [2022-11-19 07:26:05,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:26:05,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876569076] [2022-11-19 07:26:05,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:26:05,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:26:05,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:26:05,930 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-19 07:26:05,931 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:26:05,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876569076] [2022-11-19 07:26:05,932 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876569076] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:26:05,933 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:26:05,933 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:26:05,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751552675] [2022-11-19 07:26:05,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:26:05,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:26:05,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:26:05,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:26:05,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:26:05,989 INFO L87 Difference]: Start difference. First operand has 1151 states, 719 states have (on average 1.3532684283727399) internal successors, (973), 763 states have internal predecessors, (973), 343 states have call successors, (343), 88 states have call predecessors, (343), 87 states have return successors, (337), 331 states have call predecessors, (337), 337 states have call successors, (337) Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2022-11-19 07:26:10,632 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 07:26:10,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:26:10,757 INFO L93 Difference]: Finished difference Result 3391 states and 4901 transitions. [2022-11-19 07:26:10,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:26:10,769 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 64 [2022-11-19 07:26:10,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:26:10,837 INFO L225 Difference]: With dead ends: 3391 [2022-11-19 07:26:10,837 INFO L226 Difference]: Without dead ends: 2214 [2022-11-19 07:26:10,856 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 [2022-11-19 07:26:10,862 INFO L413 NwaCegarLoop]: 1770 mSDtfsCounter, 1589 mSDsluCounter, 1411 mSDsCounter, 0 mSdLazyCounter, 424 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1589 SdHoareTripleChecker+Valid, 3181 SdHoareTripleChecker+Invalid, 427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 424 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-11-19 07:26:10,863 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1589 Valid, 3181 Invalid, 427 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 424 Invalid, 1 Unknown, 0 Unchecked, 4.4s Time] [2022-11-19 07:26:10,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2214 states. [2022-11-19 07:26:11,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2214 to 2195. [2022-11-19 07:26:11,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2195 states, 1375 states have (on average 1.3316363636363637) internal successors, (1831), 1441 states have internal predecessors, (1831), 649 states have call successors, (649), 171 states have call predecessors, (649), 170 states have return successors, (640), 626 states have call predecessors, (640), 640 states have call successors, (640) [2022-11-19 07:26:11,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2195 states to 2195 states and 3120 transitions. [2022-11-19 07:26:11,192 INFO L78 Accepts]: Start accepts. Automaton has 2195 states and 3120 transitions. Word has length 64 [2022-11-19 07:26:11,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:26:11,193 INFO L495 AbstractCegarLoop]: Abstraction has 2195 states and 3120 transitions. [2022-11-19 07:26:11,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2022-11-19 07:26:11,194 INFO L276 IsEmpty]: Start isEmpty. Operand 2195 states and 3120 transitions. [2022-11-19 07:26:11,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-19 07:26:11,208 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:26:11,208 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2022-11-19 07:26:11,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 07:26:11,209 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:26:11,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:26:11,210 INFO L85 PathProgramCache]: Analyzing trace with hash 1774686802, now seen corresponding path program 1 times [2022-11-19 07:26:11,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:26:11,211 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955685004] [2022-11-19 07:26:11,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:26:11,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:26:11,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:26:11,581 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-19 07:26:11,581 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:26:11,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955685004] [2022-11-19 07:26:11,583 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955685004] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:26:11,588 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:26:11,588 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:26:11,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537996604] [2022-11-19 07:26:11,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:26:11,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:26:11,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:26:11,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:26:11,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:26:11,593 INFO L87 Difference]: Start difference. First operand 2195 states and 3120 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-19 07:26:16,085 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 07:26:16,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:26:16,238 INFO L93 Difference]: Finished difference Result 6501 states and 9246 transitions. [2022-11-19 07:26:16,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:26:16,240 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 67 [2022-11-19 07:26:16,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:26:16,292 INFO L225 Difference]: With dead ends: 6501 [2022-11-19 07:26:16,293 INFO L226 Difference]: Without dead ends: 4321 [2022-11-19 07:26:16,313 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 [2022-11-19 07:26:16,314 INFO L413 NwaCegarLoop]: 1761 mSDtfsCounter, 1534 mSDsluCounter, 1385 mSDsCounter, 0 mSdLazyCounter, 427 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1534 SdHoareTripleChecker+Valid, 3146 SdHoareTripleChecker+Invalid, 431 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 427 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:26:16,315 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1534 Valid, 3146 Invalid, 431 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 427 Invalid, 1 Unknown, 0 Unchecked, 4.2s Time] [2022-11-19 07:26:16,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4321 states. [2022-11-19 07:26:16,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4321 to 4312. [2022-11-19 07:26:16,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4312 states, 2708 states have (on average 1.3305022156573116) internal successors, (3603), 2829 states have internal predecessors, (3603), 1269 states have call successors, (1269), 335 states have call predecessors, (1269), 334 states have return successors, (1260), 1235 states have call predecessors, (1260), 1260 states have call successors, (1260) [2022-11-19 07:26:16,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4312 states to 4312 states and 6132 transitions. [2022-11-19 07:26:16,672 INFO L78 Accepts]: Start accepts. Automaton has 4312 states and 6132 transitions. Word has length 67 [2022-11-19 07:26:16,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:26:16,673 INFO L495 AbstractCegarLoop]: Abstraction has 4312 states and 6132 transitions. [2022-11-19 07:26:16,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-19 07:26:16,674 INFO L276 IsEmpty]: Start isEmpty. Operand 4312 states and 6132 transitions. [2022-11-19 07:26:16,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-19 07:26:16,678 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:26:16,679 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2022-11-19 07:26:16,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 07:26:16,680 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:26:16,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:26:16,682 INFO L85 PathProgramCache]: Analyzing trace with hash -1798982033, now seen corresponding path program 1 times [2022-11-19 07:26:16,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:26:16,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19201216] [2022-11-19 07:26:16,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:26:16,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:26:16,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:26:17,084 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-19 07:26:17,085 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:26:17,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19201216] [2022-11-19 07:26:17,089 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19201216] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:26:17,089 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:26:17,089 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:26:17,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479152206] [2022-11-19 07:26:17,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:26:17,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:26:17,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:26:17,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:26:17,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:26:17,097 INFO L87 Difference]: Start difference. First operand 4312 states and 6132 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-19 07:26:20,535 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 07:26:21,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:26:21,788 INFO L93 Difference]: Finished difference Result 8599 states and 12228 transitions. [2022-11-19 07:26:21,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:26:21,790 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 68 [2022-11-19 07:26:21,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:26:21,894 INFO L225 Difference]: With dead ends: 8599 [2022-11-19 07:26:21,894 INFO L226 Difference]: Without dead ends: 8596 [2022-11-19 07:26:21,904 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 [2022-11-19 07:26:21,910 INFO L413 NwaCegarLoop]: 1719 mSDtfsCounter, 1571 mSDsluCounter, 1371 mSDsCounter, 0 mSdLazyCounter, 404 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1571 SdHoareTripleChecker+Valid, 3090 SdHoareTripleChecker+Invalid, 406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 404 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:26:21,912 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1571 Valid, 3090 Invalid, 406 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 404 Invalid, 1 Unknown, 0 Unchecked, 4.2s Time] [2022-11-19 07:26:21,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8596 states. [2022-11-19 07:26:22,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8596 to 8590. [2022-11-19 07:26:22,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8590 states, 5401 states have (on average 1.3306795037955934) internal successors, (7187), 5635 states have internal predecessors, (7187), 2521 states have call successors, (2521), 668 states have call predecessors, (2521), 667 states have return successors, (2512), 2462 states have call predecessors, (2512), 2512 states have call successors, (2512) [2022-11-19 07:26:22,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8590 states to 8590 states and 12220 transitions. [2022-11-19 07:26:22,794 INFO L78 Accepts]: Start accepts. Automaton has 8590 states and 12220 transitions. Word has length 68 [2022-11-19 07:26:22,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:26:22,795 INFO L495 AbstractCegarLoop]: Abstraction has 8590 states and 12220 transitions. [2022-11-19 07:26:22,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-19 07:26:22,797 INFO L276 IsEmpty]: Start isEmpty. Operand 8590 states and 12220 transitions. [2022-11-19 07:26:22,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-11-19 07:26:22,800 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:26:22,800 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2022-11-19 07:26:22,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-19 07:26:22,801 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:26:22,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:26:22,803 INFO L85 PathProgramCache]: Analyzing trace with hash 65637417, now seen corresponding path program 1 times [2022-11-19 07:26:22,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:26:22,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029409807] [2022-11-19 07:26:22,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:26:22,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:26:22,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:26:23,104 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-19 07:26:23,105 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:26:23,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029409807] [2022-11-19 07:26:23,106 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029409807] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:26:23,106 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:26:23,106 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:26:23,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245504922] [2022-11-19 07:26:23,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:26:23,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:26:23,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:26:23,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:26:23,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:26:23,109 INFO L87 Difference]: Start difference. First operand 8590 states and 12220 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-19 07:26:26,455 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 07:26:27,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:26:27,865 INFO L93 Difference]: Finished difference Result 8600 states and 12229 transitions. [2022-11-19 07:26:27,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:26:27,868 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 69 [2022-11-19 07:26:27,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:26:27,945 INFO L225 Difference]: With dead ends: 8600 [2022-11-19 07:26:27,945 INFO L226 Difference]: Without dead ends: 8597 [2022-11-19 07:26:27,953 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 [2022-11-19 07:26:27,959 INFO L413 NwaCegarLoop]: 1719 mSDtfsCounter, 1568 mSDsluCounter, 1374 mSDsCounter, 0 mSdLazyCounter, 404 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1568 SdHoareTripleChecker+Valid, 3093 SdHoareTripleChecker+Invalid, 406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 404 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:26:27,960 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1568 Valid, 3093 Invalid, 406 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 404 Invalid, 1 Unknown, 0 Unchecked, 4.2s Time] [2022-11-19 07:26:27,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8597 states. [2022-11-19 07:26:28,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8597 to 8591. [2022-11-19 07:26:28,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8591 states, 5402 states have (on average 1.330618289522399) internal successors, (7188), 5636 states have internal predecessors, (7188), 2521 states have call successors, (2521), 668 states have call predecessors, (2521), 667 states have return successors, (2512), 2462 states have call predecessors, (2512), 2512 states have call successors, (2512) [2022-11-19 07:26:28,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8591 states to 8591 states and 12221 transitions. [2022-11-19 07:26:28,522 INFO L78 Accepts]: Start accepts. Automaton has 8591 states and 12221 transitions. Word has length 69 [2022-11-19 07:26:28,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:26:28,525 INFO L495 AbstractCegarLoop]: Abstraction has 8591 states and 12221 transitions. [2022-11-19 07:26:28,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-19 07:26:28,526 INFO L276 IsEmpty]: Start isEmpty. Operand 8591 states and 12221 transitions. [2022-11-19 07:26:28,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-11-19 07:26:28,527 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:26:28,528 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2022-11-19 07:26:28,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-19 07:26:28,528 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:26:28,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:26:28,529 INFO L85 PathProgramCache]: Analyzing trace with hash 2034270386, now seen corresponding path program 1 times [2022-11-19 07:26:28,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:26:28,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990674327] [2022-11-19 07:26:28,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:26:28,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:26:28,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:26:28,875 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-19 07:26:28,876 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:26:28,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990674327] [2022-11-19 07:26:28,876 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990674327] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:26:28,876 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:26:28,877 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:26:28,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158683403] [2022-11-19 07:26:28,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:26:28,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:26:28,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:26:28,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:26:28,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:26:28,879 INFO L87 Difference]: Start difference. First operand 8591 states and 12221 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-19 07:26:32,980 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 07:26:33,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:26:33,640 INFO L93 Difference]: Finished difference Result 14525 states and 20502 transitions. [2022-11-19 07:26:33,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:26:33,642 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 70 [2022-11-19 07:26:33,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:26:33,783 INFO L225 Difference]: With dead ends: 14525 [2022-11-19 07:26:33,784 INFO L226 Difference]: Without dead ends: 14521 [2022-11-19 07:26:33,798 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 [2022-11-19 07:26:33,799 INFO L413 NwaCegarLoop]: 1936 mSDtfsCounter, 1492 mSDsluCounter, 1371 mSDsCounter, 0 mSdLazyCounter, 449 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1492 SdHoareTripleChecker+Valid, 3307 SdHoareTripleChecker+Invalid, 454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 449 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:26:33,799 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1492 Valid, 3307 Invalid, 454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 449 Invalid, 1 Unknown, 0 Unchecked, 4.1s Time] [2022-11-19 07:26:33,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14521 states. [2022-11-19 07:26:34,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14521 to 14515. [2022-11-19 07:26:34,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14515 states, 9137 states have (on average 1.3269125533544928) internal successors, (12124), 9516 states have internal predecessors, (12124), 4185 states have call successors, (4185), 1197 states have call predecessors, (4185), 1192 states have return successors, (4176), 4085 states have call predecessors, (4176), 4176 states have call successors, (4176) [2022-11-19 07:26:34,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14515 states to 14515 states and 20485 transitions. [2022-11-19 07:26:34,887 INFO L78 Accepts]: Start accepts. Automaton has 14515 states and 20485 transitions. Word has length 70 [2022-11-19 07:26:34,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:26:34,888 INFO L495 AbstractCegarLoop]: Abstraction has 14515 states and 20485 transitions. [2022-11-19 07:26:34,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-19 07:26:34,889 INFO L276 IsEmpty]: Start isEmpty. Operand 14515 states and 20485 transitions. [2022-11-19 07:26:34,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-19 07:26:34,891 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:26:34,892 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2022-11-19 07:26:34,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-19 07:26:34,892 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:26:34,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:26:34,893 INFO L85 PathProgramCache]: Analyzing trace with hash -1362612148, now seen corresponding path program 1 times [2022-11-19 07:26:34,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:26:34,894 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963703890] [2022-11-19 07:26:34,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:26:34,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:26:34,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:26:35,097 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-19 07:26:35,097 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:26:35,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963703890] [2022-11-19 07:26:35,098 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963703890] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:26:35,098 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:26:35,098 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:26:35,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910568515] [2022-11-19 07:26:35,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:26:35,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:26:35,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:26:35,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:26:35,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:26:35,100 INFO L87 Difference]: Start difference. First operand 14515 states and 20485 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-19 07:26:38,597 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 07:26:39,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:26:39,546 INFO L93 Difference]: Finished difference Result 22409 states and 31696 transitions. [2022-11-19 07:26:39,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:26:39,548 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 71 [2022-11-19 07:26:39,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:26:39,737 INFO L225 Difference]: With dead ends: 22409 [2022-11-19 07:26:39,737 INFO L226 Difference]: Without dead ends: 22405 [2022-11-19 07:26:39,765 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 [2022-11-19 07:26:39,766 INFO L413 NwaCegarLoop]: 1700 mSDtfsCounter, 1519 mSDsluCounter, 1338 mSDsCounter, 0 mSdLazyCounter, 402 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1519 SdHoareTripleChecker+Valid, 3038 SdHoareTripleChecker+Invalid, 407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 402 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-11-19 07:26:39,766 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1519 Valid, 3038 Invalid, 407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 402 Invalid, 1 Unknown, 0 Unchecked, 3.7s Time] [2022-11-19 07:26:39,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22405 states. [2022-11-19 07:26:41,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22405 to 22398. [2022-11-19 07:26:41,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22398 states, 14178 states have (on average 1.33058259274933) internal successors, (18865), 14791 states have internal predecessors, (18865), 6409 states have call successors, (6409), 1839 states have call predecessors, (6409), 1810 states have return successors, (6400), 6211 states have call predecessors, (6400), 6400 states have call successors, (6400) [2022-11-19 07:26:41,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22398 states to 22398 states and 31674 transitions. [2022-11-19 07:26:41,323 INFO L78 Accepts]: Start accepts. Automaton has 22398 states and 31674 transitions. Word has length 71 [2022-11-19 07:26:41,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:26:41,324 INFO L495 AbstractCegarLoop]: Abstraction has 22398 states and 31674 transitions. [2022-11-19 07:26:41,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-19 07:26:41,324 INFO L276 IsEmpty]: Start isEmpty. Operand 22398 states and 31674 transitions. [2022-11-19 07:26:41,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-11-19 07:26:41,325 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:26:41,325 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2022-11-19 07:26:41,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-19 07:26:41,325 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:26:41,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:26:41,326 INFO L85 PathProgramCache]: Analyzing trace with hash 708216565, now seen corresponding path program 1 times [2022-11-19 07:26:41,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:26:41,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117487194] [2022-11-19 07:26:41,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:26:41,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:26:41,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:26:41,522 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-19 07:26:41,523 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:26:41,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117487194] [2022-11-19 07:26:41,523 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117487194] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:26:41,523 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:26:41,523 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:26:41,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187708530] [2022-11-19 07:26:41,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:26:41,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:26:41,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:26:41,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:26:41,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:26:41,526 INFO L87 Difference]: Start difference. First operand 22398 states and 31674 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-19 07:26:44,866 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 07:26:46,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:26:46,183 INFO L93 Difference]: Finished difference Result 22408 states and 31682 transitions. [2022-11-19 07:26:46,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:26:46,185 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 72 [2022-11-19 07:26:46,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:26:46,324 INFO L225 Difference]: With dead ends: 22408 [2022-11-19 07:26:46,324 INFO L226 Difference]: Without dead ends: 22395 [2022-11-19 07:26:46,339 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 [2022-11-19 07:26:46,340 INFO L413 NwaCegarLoop]: 1720 mSDtfsCounter, 1555 mSDsluCounter, 1383 mSDsCounter, 0 mSdLazyCounter, 403 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1555 SdHoareTripleChecker+Valid, 3103 SdHoareTripleChecker+Invalid, 404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 403 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-11-19 07:26:46,341 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1555 Valid, 3103 Invalid, 404 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 403 Invalid, 1 Unknown, 0 Unchecked, 3.7s Time] [2022-11-19 07:26:46,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22395 states. [2022-11-19 07:26:47,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22395 to 22391. [2022-11-19 07:26:47,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22391 states, 14173 states have (on average 1.330346433359204) internal successors, (18855), 14786 states have internal predecessors, (18855), 6408 states have call successors, (6408), 1838 states have call predecessors, (6408), 1809 states have return successors, (6399), 6210 states have call predecessors, (6399), 6399 states have call successors, (6399) [2022-11-19 07:26:47,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22391 states to 22391 states and 31662 transitions. [2022-11-19 07:26:47,717 INFO L78 Accepts]: Start accepts. Automaton has 22391 states and 31662 transitions. Word has length 72 [2022-11-19 07:26:47,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:26:47,718 INFO L495 AbstractCegarLoop]: Abstraction has 22391 states and 31662 transitions. [2022-11-19 07:26:47,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-19 07:26:47,719 INFO L276 IsEmpty]: Start isEmpty. Operand 22391 states and 31662 transitions. [2022-11-19 07:26:47,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-19 07:26:47,733 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:26:47,733 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2022-11-19 07:26:47,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-19 07:26:47,733 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:26:47,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:26:47,734 INFO L85 PathProgramCache]: Analyzing trace with hash 1037324029, now seen corresponding path program 1 times [2022-11-19 07:26:47,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:26:47,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493380829] [2022-11-19 07:26:47,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:26:47,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:26:47,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:26:48,280 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2022-11-19 07:26:48,280 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:26:48,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493380829] [2022-11-19 07:26:48,281 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493380829] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:26:48,281 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:26:48,281 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:26:48,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390667492] [2022-11-19 07:26:48,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:26:48,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:26:48,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:26:48,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:26:48,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:26:48,284 INFO L87 Difference]: Start difference. First operand 22391 states and 31662 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-19 07:26:52,203 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 07:26:52,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:26:52,651 INFO L93 Difference]: Finished difference Result 22497 states and 31779 transitions. [2022-11-19 07:26:52,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:26:52,652 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 109 [2022-11-19 07:26:52,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:26:52,819 INFO L225 Difference]: With dead ends: 22497 [2022-11-19 07:26:52,820 INFO L226 Difference]: Without dead ends: 22494 [2022-11-19 07:26:52,843 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:26:52,844 INFO L413 NwaCegarLoop]: 1409 mSDtfsCounter, 57 mSDsluCounter, 1352 mSDsCounter, 0 mSdLazyCounter, 409 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 2761 SdHoareTripleChecker+Invalid, 410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 409 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-11-19 07:26:52,845 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 2761 Invalid, 410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 409 Invalid, 1 Unknown, 0 Unchecked, 3.5s Time] [2022-11-19 07:26:52,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22494 states. [2022-11-19 07:26:54,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22494 to 22494. [2022-11-19 07:26:54,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22494 states, 14225 states have (on average 1.3282952548330405) internal successors, (18895), 14837 states have internal predecessors, (18895), 6439 states have call successors, (6439), 1858 states have call predecessors, (6439), 1829 states have return successors, (6431), 6242 states have call predecessors, (6431), 6431 states have call successors, (6431) [2022-11-19 07:26:54,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22494 states to 22494 states and 31765 transitions. [2022-11-19 07:26:54,189 INFO L78 Accepts]: Start accepts. Automaton has 22494 states and 31765 transitions. Word has length 109 [2022-11-19 07:26:54,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:26:54,190 INFO L495 AbstractCegarLoop]: Abstraction has 22494 states and 31765 transitions. [2022-11-19 07:26:54,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-19 07:26:54,190 INFO L276 IsEmpty]: Start isEmpty. Operand 22494 states and 31765 transitions. [2022-11-19 07:26:54,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-11-19 07:26:54,200 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:26:54,201 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2022-11-19 07:26:54,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-19 07:26:54,201 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:26:54,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:26:54,203 INFO L85 PathProgramCache]: Analyzing trace with hash 2139014997, now seen corresponding path program 1 times [2022-11-19 07:26:54,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:26:54,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132774158] [2022-11-19 07:26:54,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:26:54,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:26:54,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:26:54,444 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-11-19 07:26:54,445 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:26:54,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132774158] [2022-11-19 07:26:54,445 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132774158] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:26:54,445 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:26:54,445 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:26:54,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744705988] [2022-11-19 07:26:54,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:26:54,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:26:54,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:26:54,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:26:54,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:26:54,449 INFO L87 Difference]: Start difference. First operand 22494 states and 31765 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-19 07:26:59,561 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 07:27:00,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:27:00,557 INFO L93 Difference]: Finished difference Result 57384 states and 80619 transitions. [2022-11-19 07:27:00,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:27:00,558 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 125 [2022-11-19 07:27:00,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:27:00,815 INFO L225 Difference]: With dead ends: 57384 [2022-11-19 07:27:00,816 INFO L226 Difference]: Without dead ends: 34905 [2022-11-19 07:27:00,963 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 [2022-11-19 07:27:00,966 INFO L413 NwaCegarLoop]: 1646 mSDtfsCounter, 944 mSDsluCounter, 1367 mSDsCounter, 0 mSdLazyCounter, 438 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 944 SdHoareTripleChecker+Valid, 3013 SdHoareTripleChecker+Invalid, 441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 438 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:27:00,967 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [944 Valid, 3013 Invalid, 441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 438 Invalid, 1 Unknown, 0 Unchecked, 4.2s Time] [2022-11-19 07:27:01,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34905 states. [2022-11-19 07:27:02,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34905 to 34862. [2022-11-19 07:27:02,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34862 states, 22387 states have (on average 1.33376513154956) internal successors, (29859), 23269 states have internal predecessors, (29859), 9475 states have call successors, (9475), 3036 states have call predecessors, (9475), 2999 states have return successors, (9467), 9186 states have call predecessors, (9467), 9467 states have call successors, (9467) [2022-11-19 07:27:03,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34862 states to 34862 states and 48801 transitions. [2022-11-19 07:27:03,094 INFO L78 Accepts]: Start accepts. Automaton has 34862 states and 48801 transitions. Word has length 125 [2022-11-19 07:27:03,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:27:03,095 INFO L495 AbstractCegarLoop]: Abstraction has 34862 states and 48801 transitions. [2022-11-19 07:27:03,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-19 07:27:03,096 INFO L276 IsEmpty]: Start isEmpty. Operand 34862 states and 48801 transitions. [2022-11-19 07:27:03,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-11-19 07:27:03,151 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:27:03,152 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2022-11-19 07:27:03,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-19 07:27:03,152 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:27:03,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:27:03,153 INFO L85 PathProgramCache]: Analyzing trace with hash -1585835373, now seen corresponding path program 1 times [2022-11-19 07:27:03,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:27:03,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007647137] [2022-11-19 07:27:03,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:27:03,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:27:03,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:27:03,550 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2022-11-19 07:27:03,550 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:27:03,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007647137] [2022-11-19 07:27:03,551 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007647137] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:27:03,551 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:27:03,551 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:27:03,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740221439] [2022-11-19 07:27:03,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:27:03,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:27:03,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:27:03,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:27:03,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:27:03,553 INFO L87 Difference]: Start difference. First operand 34862 states and 48801 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 3 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2022-11-19 07:27:08,737 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 07:27:10,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:27:10,055 INFO L93 Difference]: Finished difference Result 84253 states and 117841 transitions. [2022-11-19 07:27:10,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:27:10,060 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 3 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) Word has length 161 [2022-11-19 07:27:10,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:27:10,510 INFO L225 Difference]: With dead ends: 84253 [2022-11-19 07:27:10,511 INFO L226 Difference]: Without dead ends: 49414 [2022-11-19 07:27:10,726 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 [2022-11-19 07:27:10,727 INFO L413 NwaCegarLoop]: 2437 mSDtfsCounter, 1339 mSDsluCounter, 1325 mSDsCounter, 0 mSdLazyCounter, 570 mSolverCounterSat, 8 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1339 SdHoareTripleChecker+Valid, 3762 SdHoareTripleChecker+Invalid, 579 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 570 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-11-19 07:27:10,729 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1339 Valid, 3762 Invalid, 579 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 570 Invalid, 1 Unknown, 0 Unchecked, 4.3s Time] [2022-11-19 07:27:10,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49414 states. [2022-11-19 07:27:13,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49414 to 49369. [2022-11-19 07:27:13,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49369 states, 31983 states have (on average 1.3358659287746615) internal successors, (42725), 33180 states have internal predecessors, (42725), 13088 states have call successors, (13088), 4346 states have call predecessors, (13088), 4297 states have return successors, (13080), 12690 states have call predecessors, (13080), 13080 states have call successors, (13080) [2022-11-19 07:27:13,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49369 states to 49369 states and 68893 transitions. [2022-11-19 07:27:13,684 INFO L78 Accepts]: Start accepts. Automaton has 49369 states and 68893 transitions. Word has length 161 [2022-11-19 07:27:13,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:27:13,685 INFO L495 AbstractCegarLoop]: Abstraction has 49369 states and 68893 transitions. [2022-11-19 07:27:13,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 3 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2022-11-19 07:27:13,685 INFO L276 IsEmpty]: Start isEmpty. Operand 49369 states and 68893 transitions. [2022-11-19 07:27:13,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2022-11-19 07:27:13,956 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:27:13,956 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 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] [2022-11-19 07:27:13,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-19 07:27:13,957 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:27:13,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:27:13,958 INFO L85 PathProgramCache]: Analyzing trace with hash 871030171, now seen corresponding path program 1 times [2022-11-19 07:27:13,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:27:13,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625258285] [2022-11-19 07:27:13,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:27:13,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:27:14,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:27:14,373 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2022-11-19 07:27:14,373 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:27:14,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625258285] [2022-11-19 07:27:14,374 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625258285] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:27:14,374 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:27:14,374 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:27:14,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561562933] [2022-11-19 07:27:14,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:27:14,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:27:14,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:27:14,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:27:14,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:27:14,377 INFO L87 Difference]: Start difference. First operand 49369 states and 68893 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 3 states have call successors, (26), 3 states have call predecessors, (26), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-11-19 07:27:18,999 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 07:27:20,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:27:20,046 INFO L93 Difference]: Finished difference Result 51329 states and 71252 transitions. [2022-11-19 07:27:20,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:27:20,048 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 3 states have call successors, (26), 3 states have call predecessors, (26), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 185 [2022-11-19 07:27:20,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:27:20,397 INFO L225 Difference]: With dead ends: 51329 [2022-11-19 07:27:20,397 INFO L226 Difference]: Without dead ends: 51326 [2022-11-19 07:27:20,434 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:27:20,435 INFO L413 NwaCegarLoop]: 1698 mSDtfsCounter, 680 mSDsluCounter, 1358 mSDsCounter, 0 mSdLazyCounter, 462 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 680 SdHoareTripleChecker+Valid, 3056 SdHoareTripleChecker+Invalid, 463 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 462 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:27:20,436 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [680 Valid, 3056 Invalid, 463 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 462 Invalid, 1 Unknown, 0 Unchecked, 4.2s Time] [2022-11-19 07:27:20,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51326 states. [2022-11-19 07:27:22,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51326 to 51326. [2022-11-19 07:27:22,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51326 states, 33150 states have (on average 1.3321568627450981) internal successors, (44161), 34379 states have internal predecessors, (44161), 13542 states have call successors, (13542), 4682 states have call predecessors, (13542), 4633 states have return successors, (13535), 13137 states have call predecessors, (13535), 13535 states have call successors, (13535) [2022-11-19 07:27:23,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51326 states to 51326 states and 71238 transitions. [2022-11-19 07:27:23,164 INFO L78 Accepts]: Start accepts. Automaton has 51326 states and 71238 transitions. Word has length 185 [2022-11-19 07:27:23,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:27:23,165 INFO L495 AbstractCegarLoop]: Abstraction has 51326 states and 71238 transitions. [2022-11-19 07:27:23,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 3 states have call successors, (26), 3 states have call predecessors, (26), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-11-19 07:27:23,165 INFO L276 IsEmpty]: Start isEmpty. Operand 51326 states and 71238 transitions. [2022-11-19 07:27:23,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2022-11-19 07:27:23,243 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:27:23,244 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-19 07:27:23,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-19 07:27:23,244 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:27:23,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:27:23,245 INFO L85 PathProgramCache]: Analyzing trace with hash 1894420932, now seen corresponding path program 1 times [2022-11-19 07:27:23,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:27:23,246 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037122245] [2022-11-19 07:27:23,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:27:23,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:27:33,297 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 07:27:33,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [200474874] [2022-11-19 07:27:33,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:27:33,299 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:27:33,299 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e44c3c94-f65a-4c00-a39e-17e079a4df44/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:27:33,303 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e44c3c94-f65a-4c00-a39e-17e079a4df44/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:27:33,306 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e44c3c94-f65a-4c00-a39e-17e079a4df44/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-19 07:28:07,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:28:08,140 INFO L263 TraceCheckSpWp]: Trace formula consists of 74301 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-19 07:28:08,212 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:28:08,574 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2022-11-19 07:28:08,574 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:28:08,575 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:28:08,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037122245] [2022-11-19 07:28:08,575 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 07:28:08,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [200474874] [2022-11-19 07:28:08,576 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [200474874] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:28:08,576 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:28:08,576 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:28:08,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186016813] [2022-11-19 07:28:08,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:28:08,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:28:08,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:28:08,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:28:08,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:28:08,579 INFO L87 Difference]: Start difference. First operand 51326 states and 71238 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 3 states have call successors, (39), 3 states have call predecessors, (39), 2 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2022-11-19 07:28:13,347 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 07:28:15,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:28:15,632 INFO L93 Difference]: Finished difference Result 126630 states and 175639 transitions. [2022-11-19 07:28:15,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:28:15,633 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 3 states have call successors, (39), 3 states have call predecessors, (39), 2 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) Word has length 225 [2022-11-19 07:28:15,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:28:16,120 INFO L225 Difference]: With dead ends: 126630 [2022-11-19 07:28:16,121 INFO L226 Difference]: Without dead ends: 75327 [2022-11-19 07:28:16,399 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 223 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:28:16,400 INFO L413 NwaCegarLoop]: 1716 mSDtfsCounter, 1455 mSDsluCounter, 1357 mSDsCounter, 0 mSdLazyCounter, 418 mSolverCounterSat, 8 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1455 SdHoareTripleChecker+Valid, 3073 SdHoareTripleChecker+Invalid, 427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 418 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-11-19 07:28:16,401 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1455 Valid, 3073 Invalid, 427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 418 Invalid, 1 Unknown, 0 Unchecked, 3.9s Time] [2022-11-19 07:28:16,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75327 states. [2022-11-19 07:28:19,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75327 to 75278. [2022-11-19 07:28:19,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75278 states, 48627 states have (on average 1.331297427355173) internal successors, (64737), 50411 states have internal predecessors, (64737), 19790 states have call successors, (19790), 6925 states have call predecessors, (19790), 6860 states have return successors, (19783), 19221 states have call predecessors, (19783), 19783 states have call successors, (19783) [2022-11-19 07:28:20,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75278 states to 75278 states and 104310 transitions. [2022-11-19 07:28:20,542 INFO L78 Accepts]: Start accepts. Automaton has 75278 states and 104310 transitions. Word has length 225 [2022-11-19 07:28:20,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:28:20,543 INFO L495 AbstractCegarLoop]: Abstraction has 75278 states and 104310 transitions. [2022-11-19 07:28:20,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 3 states have call successors, (39), 3 states have call predecessors, (39), 2 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2022-11-19 07:28:20,544 INFO L276 IsEmpty]: Start isEmpty. Operand 75278 states and 104310 transitions. [2022-11-19 07:28:20,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2022-11-19 07:28:20,674 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:28:20,674 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-19 07:28:20,891 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e44c3c94-f65a-4c00-a39e-17e079a4df44/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forcibly destroying the process [2022-11-19 07:28:20,915 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e44c3c94-f65a-4c00-a39e-17e079a4df44/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-19 07:28:20,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e44c3c94-f65a-4c00-a39e-17e079a4df44/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:28:20,916 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:28:20,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:28:20,916 INFO L85 PathProgramCache]: Analyzing trace with hash -433879626, now seen corresponding path program 1 times [2022-11-19 07:28:20,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:28:20,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812079299] [2022-11-19 07:28:20,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:28:20,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:28:28,867 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 07:28:28,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [886761168] [2022-11-19 07:28:28,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:28:28,868 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:28:28,869 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e44c3c94-f65a-4c00-a39e-17e079a4df44/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:28:28,870 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e44c3c94-f65a-4c00-a39e-17e079a4df44/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:28:28,891 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e44c3c94-f65a-4c00-a39e-17e079a4df44/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process