./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--hwmon--w83781d.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cddaa-8438-4537-bc9c-d07b9ed688d5/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cddaa-8438-4537-bc9c-d07b9ed688d5/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cddaa-8438-4537-bc9c-d07b9ed688d5/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cddaa-8438-4537-bc9c-d07b9ed688d5/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--hwmon--w83781d.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cddaa-8438-4537-bc9c-d07b9ed688d5/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cddaa-8438-4537-bc9c-d07b9ed688d5/bin/utaipan-Q6hlc19bkW --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 0564b8be4162feecc69c55a6b0b3eda68686a764b41f4f7494c14a4ffed0dc25 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-4e7fbc6 [2022-11-23 15:15:06,130 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 15:15:06,132 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 15:15:06,163 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 15:15:06,164 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 15:15:06,168 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 15:15:06,171 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 15:15:06,173 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 15:15:06,175 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 15:15:06,176 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 15:15:06,177 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 15:15:06,179 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 15:15:06,180 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 15:15:06,187 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 15:15:06,188 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 15:15:06,190 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 15:15:06,195 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 15:15:06,196 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 15:15:06,198 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 15:15:06,215 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 15:15:06,219 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 15:15:06,220 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 15:15:06,222 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 15:15:06,224 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 15:15:06,230 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 15:15:06,234 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 15:15:06,234 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 15:15:06,235 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 15:15:06,237 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 15:15:06,238 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 15:15:06,240 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 15:15:06,241 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 15:15:06,242 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 15:15:06,243 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 15:15:06,245 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 15:15:06,246 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 15:15:06,247 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 15:15:06,261 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 15:15:06,261 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 15:15:06,262 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 15:15:06,262 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 15:15:06,264 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cddaa-8438-4537-bc9c-d07b9ed688d5/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-23 15:15:06,302 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 15:15:06,303 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 15:15:06,303 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 15:15:06,304 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 15:15:06,305 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 15:15:06,305 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 15:15:06,305 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 15:15:06,305 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 15:15:06,306 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 15:15:06,306 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 15:15:06,307 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 15:15:06,307 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 15:15:06,307 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 15:15:06,308 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 15:15:06,308 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 15:15:06,308 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 15:15:06,308 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 15:15:06,308 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 15:15:06,310 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 15:15:06,310 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 15:15:06,310 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 15:15:06,310 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 15:15:06,310 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 15:15:06,311 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 15:15:06,311 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 15:15:06,311 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 15:15:06,312 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 15:15:06,312 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 15:15:06,312 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 15:15:06,312 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:15:06,313 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 15:15:06,313 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 15:15:06,313 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 15:15:06,314 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 15:15:06,314 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 15:15:06,314 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 15:15:06,314 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 15:15:06,314 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 15:15:06,315 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_f80cddaa-8438-4537-bc9c-d07b9ed688d5/bin/utaipan-Q6hlc19bkW/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cddaa-8438-4537-bc9c-d07b9ed688d5/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0564b8be4162feecc69c55a6b0b3eda68686a764b41f4f7494c14a4ffed0dc25 [2022-11-23 15:15:06,607 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 15:15:06,675 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 15:15:06,677 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 15:15:06,679 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 15:15:06,679 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 15:15:06,681 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cddaa-8438-4537-bc9c-d07b9ed688d5/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--hwmon--w83781d.ko-entry_point.cil.out.i [2022-11-23 15:15:09,608 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 15:15:10,250 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 15:15:10,250 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cddaa-8438-4537-bc9c-d07b9ed688d5/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--hwmon--w83781d.ko-entry_point.cil.out.i [2022-11-23 15:15:10,319 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cddaa-8438-4537-bc9c-d07b9ed688d5/bin/utaipan-Q6hlc19bkW/data/8164864d2/fe99cd3ff9ea47d4a18beba80ad8b84f/FLAG79e57eb4b [2022-11-23 15:15:10,340 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cddaa-8438-4537-bc9c-d07b9ed688d5/bin/utaipan-Q6hlc19bkW/data/8164864d2/fe99cd3ff9ea47d4a18beba80ad8b84f [2022-11-23 15:15:10,344 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 15:15:10,346 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 15:15:10,349 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 15:15:10,349 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 15:15:10,352 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 15:15:10,354 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:15:10" (1/1) ... [2022-11-23 15:15:10,355 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@96495d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:15:10, skipping insertion in model container [2022-11-23 15:15:10,355 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:15:10" (1/1) ... [2022-11-23 15:15:10,363 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 15:15:10,507 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 15:15:12,558 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cddaa-8438-4537-bc9c-d07b9ed688d5/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--hwmon--w83781d.ko-entry_point.cil.out.i[291343,291356] [2022-11-23 15:15:12,737 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:15:12,830 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 15:15:13,224 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cddaa-8438-4537-bc9c-d07b9ed688d5/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--hwmon--w83781d.ko-entry_point.cil.out.i[291343,291356] [2022-11-23 15:15:13,236 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:15:13,622 INFO L208 MainTranslator]: Completed translation [2022-11-23 15:15:13,622 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:15:13 WrapperNode [2022-11-23 15:15:13,622 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 15:15:13,625 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 15:15:13,625 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 15:15:13,625 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 15:15:13,635 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:15:13" (1/1) ... [2022-11-23 15:15:13,751 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:15:13" (1/1) ... [2022-11-23 15:15:14,072 INFO L138 Inliner]: procedures = 284, calls = 3878, calls flagged for inlining = 144, calls inlined = 140, statements flattened = 10155 [2022-11-23 15:15:14,072 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 15:15:14,073 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 15:15:14,073 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 15:15:14,074 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 15:15:14,084 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:15:13" (1/1) ... [2022-11-23 15:15:14,084 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:15:13" (1/1) ... [2022-11-23 15:15:14,117 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:15:13" (1/1) ... [2022-11-23 15:15:14,118 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:15:13" (1/1) ... [2022-11-23 15:15:14,351 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:15:13" (1/1) ... [2022-11-23 15:15:14,385 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:15:13" (1/1) ... [2022-11-23 15:15:14,480 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:15:13" (1/1) ... [2022-11-23 15:15:14,494 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:15:13" (1/1) ... [2022-11-23 15:15:14,534 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 15:15:14,535 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 15:15:14,535 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 15:15:14,535 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 15:15:14,536 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:15:13" (1/1) ... [2022-11-23 15:15:14,542 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:15:14,552 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cddaa-8438-4537-bc9c-d07b9ed688d5/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:15:14,569 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cddaa-8438-4537-bc9c-d07b9ed688d5/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 15:15:14,597 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80cddaa-8438-4537-bc9c-d07b9ed688d5/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 15:15:14,616 INFO L130 BoogieDeclarations]: Found specification of procedure w83781d_read_value [2022-11-23 15:15:14,616 INFO L138 BoogieDeclarations]: Found implementation of procedure w83781d_read_value [2022-11-23 15:15:14,617 INFO L130 BoogieDeclarations]: Found specification of procedure show_in_max [2022-11-23 15:15:14,617 INFO L138 BoogieDeclarations]: Found implementation of procedure show_in_max [2022-11-23 15:15:14,617 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-23 15:15:14,617 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-23 15:15:14,617 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-23 15:15:14,617 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-23 15:15:14,618 INFO L130 BoogieDeclarations]: Found specification of procedure w83781d_detect [2022-11-23 15:15:14,618 INFO L138 BoogieDeclarations]: Found implementation of procedure w83781d_detect [2022-11-23 15:15:14,618 INFO L130 BoogieDeclarations]: Found specification of procedure FAN_TO_REG [2022-11-23 15:15:14,618 INFO L138 BoogieDeclarations]: Found implementation of procedure FAN_TO_REG [2022-11-23 15:15:14,618 INFO L130 BoogieDeclarations]: Found specification of procedure store_beep [2022-11-23 15:15:14,618 INFO L138 BoogieDeclarations]: Found implementation of procedure store_beep [2022-11-23 15:15:14,618 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-23 15:15:14,619 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-23 15:15:14,619 INFO L130 BoogieDeclarations]: Found specification of procedure store_pwm [2022-11-23 15:15:14,619 INFO L138 BoogieDeclarations]: Found implementation of procedure store_pwm [2022-11-23 15:15:14,619 INFO L130 BoogieDeclarations]: Found specification of procedure store_in_min [2022-11-23 15:15:14,619 INFO L138 BoogieDeclarations]: Found implementation of procedure store_in_min [2022-11-23 15:15:14,619 INFO L130 BoogieDeclarations]: Found specification of procedure store_fan_div [2022-11-23 15:15:14,620 INFO L138 BoogieDeclarations]: Found implementation of procedure store_fan_div [2022-11-23 15:15:14,620 INFO L130 BoogieDeclarations]: Found specification of procedure LM75_TEMP_FROM_REG [2022-11-23 15:15:14,620 INFO L138 BoogieDeclarations]: Found implementation of procedure LM75_TEMP_FROM_REG [2022-11-23 15:15:14,620 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-23 15:15:14,621 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-23 15:15:14,622 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-23 15:15:14,622 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-23 15:15:14,622 INFO L130 BoogieDeclarations]: Found specification of procedure device_create_file [2022-11-23 15:15:14,623 INFO L138 BoogieDeclarations]: Found implementation of procedure device_create_file [2022-11-23 15:15:14,623 INFO L130 BoogieDeclarations]: Found specification of procedure show_sensor [2022-11-23 15:15:14,623 INFO L138 BoogieDeclarations]: Found implementation of procedure show_sensor [2022-11-23 15:15:14,623 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-23 15:15:14,623 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-23 15:15:14,623 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-11-23 15:15:14,623 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-11-23 15:15:14,624 INFO L130 BoogieDeclarations]: Found specification of procedure show_fan_min [2022-11-23 15:15:14,624 INFO L138 BoogieDeclarations]: Found implementation of procedure show_fan_min [2022-11-23 15:15:14,624 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 15:15:14,624 INFO L130 BoogieDeclarations]: Found specification of procedure store_temp_max_hyst [2022-11-23 15:15:14,624 INFO L138 BoogieDeclarations]: Found implementation of procedure store_temp_max_hyst [2022-11-23 15:15:14,625 INFO L130 BoogieDeclarations]: Found specification of procedure show_alarm [2022-11-23 15:15:14,625 INFO L138 BoogieDeclarations]: Found implementation of procedure show_alarm [2022-11-23 15:15:14,625 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_smbus_read_byte_data [2022-11-23 15:15:14,625 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_smbus_read_byte_data [2022-11-23 15:15:14,625 INFO L130 BoogieDeclarations]: Found specification of procedure w83781d_isa_unregister [2022-11-23 15:15:14,625 INFO L138 BoogieDeclarations]: Found implementation of procedure w83781d_isa_unregister [2022-11-23 15:15:14,626 INFO L130 BoogieDeclarations]: Found specification of procedure show_in [2022-11-23 15:15:14,626 INFO L138 BoogieDeclarations]: Found implementation of procedure show_in [2022-11-23 15:15:14,626 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-23 15:15:14,627 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-23 15:15:14,627 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-23 15:15:14,627 INFO L130 BoogieDeclarations]: Found specification of procedure show_beep [2022-11-23 15:15:14,627 INFO L138 BoogieDeclarations]: Found implementation of procedure show_beep [2022-11-23 15:15:14,627 INFO L130 BoogieDeclarations]: Found specification of procedure kstrtol [2022-11-23 15:15:14,627 INFO L138 BoogieDeclarations]: Found implementation of procedure kstrtol [2022-11-23 15:15:14,628 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 15:15:14,628 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-23 15:15:14,628 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_unregister_device [2022-11-23 15:15:14,628 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_unregister_device [2022-11-23 15:15:14,628 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2022-11-23 15:15:14,628 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2022-11-23 15:15:14,628 INFO L130 BoogieDeclarations]: Found specification of procedure show_pwm [2022-11-23 15:15:14,629 INFO L138 BoogieDeclarations]: Found implementation of procedure show_pwm [2022-11-23 15:15:14,629 INFO L130 BoogieDeclarations]: Found specification of procedure FAN_FROM_REG [2022-11-23 15:15:14,629 INFO L138 BoogieDeclarations]: Found implementation of procedure FAN_FROM_REG [2022-11-23 15:15:14,629 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2022-11-23 15:15:14,629 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2022-11-23 15:15:14,629 INFO L130 BoogieDeclarations]: Found specification of procedure store_sensor [2022-11-23 15:15:14,630 INFO L138 BoogieDeclarations]: Found implementation of procedure store_sensor [2022-11-23 15:15:14,630 INFO L130 BoogieDeclarations]: Found specification of procedure w83781d_update_device [2022-11-23 15:15:14,630 INFO L138 BoogieDeclarations]: Found implementation of procedure w83781d_update_device [2022-11-23 15:15:14,630 INFO L130 BoogieDeclarations]: Found specification of procedure w83781d_remove_files [2022-11-23 15:15:14,630 INFO L138 BoogieDeclarations]: Found implementation of procedure w83781d_remove_files [2022-11-23 15:15:14,631 INFO L130 BoogieDeclarations]: Found specification of procedure show_fan [2022-11-23 15:15:14,632 INFO L138 BoogieDeclarations]: Found implementation of procedure show_fan [2022-11-23 15:15:14,632 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2022-11-23 15:15:14,632 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2022-11-23 15:15:14,632 INFO L130 BoogieDeclarations]: Found specification of procedure store_in_max [2022-11-23 15:15:14,633 INFO L138 BoogieDeclarations]: Found implementation of procedure store_in_max [2022-11-23 15:15:14,633 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_smbus_read_word_swapped [2022-11-23 15:15:14,634 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_smbus_read_word_swapped [2022-11-23 15:15:14,634 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-23 15:15:14,634 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_create_group [2022-11-23 15:15:14,634 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_create_group [2022-11-23 15:15:14,634 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_lock_of_w83781d_data [2022-11-23 15:15:14,634 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_lock_of_w83781d_data [2022-11-23 15:15:14,635 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-23 15:15:14,635 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_remove_group [2022-11-23 15:15:14,635 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_remove_group [2022-11-23 15:15:14,635 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_get_clientdata [2022-11-23 15:15:14,635 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_get_clientdata [2022-11-23 15:15:14,636 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_smbus_write_word_swapped [2022-11-23 15:15:14,636 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_smbus_write_word_swapped [2022-11-23 15:15:14,636 INFO L130 BoogieDeclarations]: Found specification of procedure show_fan_div [2022-11-23 15:15:14,636 INFO L138 BoogieDeclarations]: Found implementation of procedure show_fan_div [2022-11-23 15:15:14,637 INFO L130 BoogieDeclarations]: Found specification of procedure LM75_TEMP_TO_REG [2022-11-23 15:15:14,637 INFO L138 BoogieDeclarations]: Found implementation of procedure LM75_TEMP_TO_REG [2022-11-23 15:15:14,637 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-23 15:15:14,637 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_update_lock_of_w83781d_data [2022-11-23 15:15:14,637 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_update_lock_of_w83781d_data [2022-11-23 15:15:14,638 INFO L130 BoogieDeclarations]: Found specification of procedure show_temp [2022-11-23 15:15:14,638 INFO L138 BoogieDeclarations]: Found implementation of procedure show_temp [2022-11-23 15:15:14,638 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-23 15:15:14,638 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-23 15:15:14,638 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_lock_of_w83781d_data [2022-11-23 15:15:14,638 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_lock_of_w83781d_data [2022-11-23 15:15:14,639 INFO L130 BoogieDeclarations]: Found specification of procedure store_temp_max [2022-11-23 15:15:14,639 INFO L138 BoogieDeclarations]: Found implementation of procedure store_temp_max [2022-11-23 15:15:14,639 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-11-23 15:15:14,640 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-11-23 15:15:14,643 INFO L130 BoogieDeclarations]: Found specification of procedure w83781d_write_value [2022-11-23 15:15:14,643 INFO L138 BoogieDeclarations]: Found implementation of procedure w83781d_write_value [2022-11-23 15:15:14,643 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-23 15:15:14,644 INFO L130 BoogieDeclarations]: Found specification of procedure show_in_min [2022-11-23 15:15:14,645 INFO L138 BoogieDeclarations]: Found implementation of procedure show_in_min [2022-11-23 15:15:14,646 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2022-11-23 15:15:14,646 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2022-11-23 15:15:14,647 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 15:15:14,647 INFO L130 BoogieDeclarations]: Found specification of procedure store_fan_min [2022-11-23 15:15:14,652 INFO L138 BoogieDeclarations]: Found implementation of procedure store_fan_min [2022-11-23 15:15:14,652 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-23 15:15:14,652 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_update_lock_of_w83781d_data [2022-11-23 15:15:14,653 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_update_lock_of_w83781d_data [2022-11-23 15:15:14,653 INFO L130 BoogieDeclarations]: Found specification of procedure show_temp_max [2022-11-23 15:15:14,653 INFO L138 BoogieDeclarations]: Found implementation of procedure show_temp_max [2022-11-23 15:15:14,653 INFO L130 BoogieDeclarations]: Found specification of procedure show_temp_max_hyst [2022-11-23 15:15:14,653 INFO L138 BoogieDeclarations]: Found implementation of procedure show_temp_max_hyst [2022-11-23 15:15:14,653 INFO L130 BoogieDeclarations]: Found specification of procedure kstrtoul [2022-11-23 15:15:14,653 INFO L138 BoogieDeclarations]: Found implementation of procedure kstrtoul [2022-11-23 15:15:14,653 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 15:15:14,654 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_smbus_write_byte_data [2022-11-23 15:15:14,654 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_smbus_write_byte_data [2022-11-23 15:15:14,654 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 15:15:14,654 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 15:15:14,654 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-11-23 15:15:14,654 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-11-23 15:15:15,836 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 15:15:15,840 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 15:15:16,225 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-23 15:17:35,207 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 15:17:36,470 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 15:17:36,471 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-23 15:17:36,478 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:17:36 BoogieIcfgContainer [2022-11-23 15:17:36,478 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 15:17:36,481 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 15:17:36,481 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 15:17:36,485 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 15:17:36,485 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:15:10" (1/3) ... [2022-11-23 15:17:36,486 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@108249ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:17:36, skipping insertion in model container [2022-11-23 15:17:36,487 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:15:13" (2/3) ... [2022-11-23 15:17:36,488 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@108249ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:17:36, skipping insertion in model container [2022-11-23 15:17:36,488 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:17:36" (3/3) ... [2022-11-23 15:17:36,489 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--hwmon--w83781d.ko-entry_point.cil.out.i [2022-11-23 15:17:36,510 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 15:17:36,510 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 15:17:36,633 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 15:17:36,641 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;@16aae1f8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 15:17:36,642 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 15:17:36,657 INFO L276 IsEmpty]: Start isEmpty. Operand has 2608 states, 1656 states have (on average 1.4233091787439613) internal successors, (2357), 1757 states have internal predecessors, (2357), 889 states have call successors, (889), 62 states have call predecessors, (889), 61 states have return successors, (798), 798 states have call predecessors, (798), 798 states have call successors, (798) [2022-11-23 15:17:36,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2820 [2022-11-23 15:17:36,958 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:17:36,960 INFO L195 NwaCegarLoop]: trace histogram [210, 210, 210, 210, 210, 210, 210, 210, 210, 56, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:17:36,961 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:17:36,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:17:36,969 INFO L85 PathProgramCache]: Analyzing trace with hash 744569955, now seen corresponding path program 1 times [2022-11-23 15:17:36,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:17:36,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746347447] [2022-11-23 15:17:36,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:17:36,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:17:40,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:17:46,861 INFO L134 CoverageAnalysis]: Checked inductivity of 224070 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 224070 trivial. 0 not checked. [2022-11-23 15:17:46,862 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:17:46,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746347447] [2022-11-23 15:17:46,864 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746347447] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:17:46,865 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:17:46,866 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:17:46,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157872927] [2022-11-23 15:17:46,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:17:46,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:17:46,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:17:46,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:17:46,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:17:46,938 INFO L87 Difference]: Start difference. First operand has 2608 states, 1656 states have (on average 1.4233091787439613) internal successors, (2357), 1757 states have internal predecessors, (2357), 889 states have call successors, (889), 62 states have call predecessors, (889), 61 states have return successors, (798), 798 states have call predecessors, (798), 798 states have call successors, (798) Second operand has 3 states, 3 states have (on average 95.33333333333333) internal successors, (286), 3 states have internal predecessors, (286), 2 states have call successors, (273), 2 states have call predecessors, (273), 1 states have return successors, (269), 2 states have call predecessors, (269), 2 states have call successors, (269) [2022-11-23 15:17:49,176 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:17:51,535 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:17:52,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:17:52,613 INFO L93 Difference]: Finished difference Result 6742 states and 11060 transitions. [2022-11-23 15:17:52,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:17:52,616 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 95.33333333333333) internal successors, (286), 3 states have internal predecessors, (286), 2 states have call successors, (273), 2 states have call predecessors, (273), 1 states have return successors, (269), 2 states have call predecessors, (269), 2 states have call successors, (269) Word has length 2819 [2022-11-23 15:17:52,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:17:52,678 INFO L225 Difference]: With dead ends: 6742 [2022-11-23 15:17:52,679 INFO L226 Difference]: Without dead ends: 4484 [2022-11-23 15:17:52,716 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:17:52,721 INFO L413 NwaCegarLoop]: 4393 mSDtfsCounter, 3217 mSDsluCounter, 3861 mSDsCounter, 0 mSdLazyCounter, 340 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3217 SdHoareTripleChecker+Valid, 8254 SdHoareTripleChecker+Invalid, 343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 340 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:17:52,722 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3217 Valid, 8254 Invalid, 343 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 340 Invalid, 2 Unknown, 0 Unchecked, 5.1s Time] [2022-11-23 15:17:52,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4484 states. [2022-11-23 15:17:53,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4484 to 4467. [2022-11-23 15:17:53,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4467 states, 3026 states have (on average 1.3995373430270985) internal successors, (4235), 3037 states have internal predecessors, (4235), 1321 states have call successors, (1321), 120 states have call predecessors, (1321), 119 states have return successors, (1313), 1311 states have call predecessors, (1313), 1313 states have call successors, (1313) [2022-11-23 15:17:53,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4467 states to 4467 states and 6869 transitions. [2022-11-23 15:17:53,326 INFO L78 Accepts]: Start accepts. Automaton has 4467 states and 6869 transitions. Word has length 2819 [2022-11-23 15:17:53,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:17:53,334 INFO L495 AbstractCegarLoop]: Abstraction has 4467 states and 6869 transitions. [2022-11-23 15:17:53,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.33333333333333) internal successors, (286), 3 states have internal predecessors, (286), 2 states have call successors, (273), 2 states have call predecessors, (273), 1 states have return successors, (269), 2 states have call predecessors, (269), 2 states have call successors, (269) [2022-11-23 15:17:53,335 INFO L276 IsEmpty]: Start isEmpty. Operand 4467 states and 6869 transitions. [2022-11-23 15:17:53,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2823 [2022-11-23 15:17:53,634 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:17:53,635 INFO L195 NwaCegarLoop]: trace histogram [210, 210, 210, 210, 210, 210, 210, 210, 210, 56, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:17:53,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 15:17:53,636 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:17:53,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:17:53,638 INFO L85 PathProgramCache]: Analyzing trace with hash -1611478480, now seen corresponding path program 1 times [2022-11-23 15:17:53,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:17:53,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849550508] [2022-11-23 15:17:53,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:17:53,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:17:55,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:18:00,892 INFO L134 CoverageAnalysis]: Checked inductivity of 224070 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 224070 trivial. 0 not checked. [2022-11-23 15:18:00,893 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:18:00,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849550508] [2022-11-23 15:18:00,896 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849550508] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:18:00,896 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:18:00,897 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:18:00,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510113820] [2022-11-23 15:18:00,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:18:01,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:18:01,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:18:01,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:18:01,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:18:01,014 INFO L87 Difference]: Start difference. First operand 4467 states and 6869 transitions. Second operand has 3 states, 3 states have (on average 96.33333333333333) internal successors, (289), 3 states have internal predecessors, (289), 2 states have call successors, (273), 2 states have call predecessors, (273), 1 states have return successors, (269), 2 states have call predecessors, (269), 2 states have call successors, (269) [2022-11-23 15:18:03,190 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:18:04,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:18:04,486 INFO L93 Difference]: Finished difference Result 12302 states and 18960 transitions. [2022-11-23 15:18:04,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:18:04,488 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 96.33333333333333) internal successors, (289), 3 states have internal predecessors, (289), 2 states have call successors, (273), 2 states have call predecessors, (273), 1 states have return successors, (269), 2 states have call predecessors, (269), 2 states have call successors, (269) Word has length 2822 [2022-11-23 15:18:04,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:18:04,553 INFO L225 Difference]: With dead ends: 12302 [2022-11-23 15:18:04,554 INFO L226 Difference]: Without dead ends: 8371 [2022-11-23 15:18:04,586 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:18:04,587 INFO L413 NwaCegarLoop]: 4215 mSDtfsCounter, 3020 mSDsluCounter, 3674 mSDsCounter, 0 mSdLazyCounter, 343 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3020 SdHoareTripleChecker+Valid, 7889 SdHoareTripleChecker+Invalid, 345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 343 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-11-23 15:18:04,588 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3020 Valid, 7889 Invalid, 345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 343 Invalid, 1 Unknown, 0 Unchecked, 3.0s Time] [2022-11-23 15:18:04,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8371 states. [2022-11-23 15:18:05,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8371 to 8353. [2022-11-23 15:18:05,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8353 states, 5755 states have (on average 1.4177237185056473) internal successors, (8159), 5772 states have internal predecessors, (8159), 2360 states have call successors, (2360), 238 states have call predecessors, (2360), 237 states have return successors, (2352), 2346 states have call predecessors, (2352), 2352 states have call successors, (2352) [2022-11-23 15:18:05,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8353 states to 8353 states and 12871 transitions. [2022-11-23 15:18:05,282 INFO L78 Accepts]: Start accepts. Automaton has 8353 states and 12871 transitions. Word has length 2822 [2022-11-23 15:18:05,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:18:05,287 INFO L495 AbstractCegarLoop]: Abstraction has 8353 states and 12871 transitions. [2022-11-23 15:18:05,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 96.33333333333333) internal successors, (289), 3 states have internal predecessors, (289), 2 states have call successors, (273), 2 states have call predecessors, (273), 1 states have return successors, (269), 2 states have call predecessors, (269), 2 states have call successors, (269) [2022-11-23 15:18:05,289 INFO L276 IsEmpty]: Start isEmpty. Operand 8353 states and 12871 transitions. [2022-11-23 15:18:05,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2821 [2022-11-23 15:18:05,354 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:18:05,355 INFO L195 NwaCegarLoop]: trace histogram [210, 210, 210, 210, 210, 210, 210, 210, 210, 56, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:18:05,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 15:18:05,356 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:18:05,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:18:05,366 INFO L85 PathProgramCache]: Analyzing trace with hash -1402515368, now seen corresponding path program 1 times [2022-11-23 15:18:05,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:18:05,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846731874] [2022-11-23 15:18:05,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:18:05,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:18:07,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:18:11,433 INFO L134 CoverageAnalysis]: Checked inductivity of 224070 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 224070 trivial. 0 not checked. [2022-11-23 15:18:11,434 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:18:11,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846731874] [2022-11-23 15:18:11,434 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846731874] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:18:11,434 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:18:11,435 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:18:11,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819494007] [2022-11-23 15:18:11,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:18:11,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:18:11,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:18:11,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:18:11,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:18:11,440 INFO L87 Difference]: Start difference. First operand 8353 states and 12871 transitions. Second operand has 3 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 2 states have call successors, (273), 2 states have call predecessors, (273), 1 states have return successors, (269), 2 states have call predecessors, (269), 2 states have call successors, (269) [2022-11-23 15:18:13,622 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:18:15,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:18:15,448 INFO L93 Difference]: Finished difference Result 23963 states and 36973 transitions. [2022-11-23 15:18:15,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:18:15,449 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 2 states have call successors, (273), 2 states have call predecessors, (273), 1 states have return successors, (269), 2 states have call predecessors, (269), 2 states have call successors, (269) Word has length 2820 [2022-11-23 15:18:15,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:18:15,575 INFO L225 Difference]: With dead ends: 23963 [2022-11-23 15:18:15,576 INFO L226 Difference]: Without dead ends: 16146 [2022-11-23 15:18:15,625 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:18:15,629 INFO L413 NwaCegarLoop]: 4233 mSDtfsCounter, 3034 mSDsluCounter, 3677 mSDsCounter, 0 mSdLazyCounter, 340 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3034 SdHoareTripleChecker+Valid, 7910 SdHoareTripleChecker+Invalid, 342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 340 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-11-23 15:18:15,630 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3034 Valid, 7910 Invalid, 342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 340 Invalid, 1 Unknown, 0 Unchecked, 3.0s Time] [2022-11-23 15:18:15,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16146 states. [2022-11-23 15:18:16,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16146 to 16129. [2022-11-23 15:18:16,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16129 states, 11213 states have (on average 1.4273610987246945) internal successors, (16005), 11242 states have internal predecessors, (16005), 4442 states have call successors, (4442), 474 states have call predecessors, (4442), 473 states have return successors, (4434), 4420 states have call predecessors, (4434), 4434 states have call successors, (4434) [2022-11-23 15:18:16,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16129 states to 16129 states and 24881 transitions. [2022-11-23 15:18:16,754 INFO L78 Accepts]: Start accepts. Automaton has 16129 states and 24881 transitions. Word has length 2820 [2022-11-23 15:18:16,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:18:16,761 INFO L495 AbstractCegarLoop]: Abstraction has 16129 states and 24881 transitions. [2022-11-23 15:18:16,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 2 states have call successors, (273), 2 states have call predecessors, (273), 1 states have return successors, (269), 2 states have call predecessors, (269), 2 states have call successors, (269) [2022-11-23 15:18:16,762 INFO L276 IsEmpty]: Start isEmpty. Operand 16129 states and 24881 transitions. [2022-11-23 15:18:16,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2824 [2022-11-23 15:18:16,824 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:18:16,826 INFO L195 NwaCegarLoop]: trace histogram [210, 210, 210, 210, 210, 210, 210, 210, 210, 56, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:18:16,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 15:18:16,826 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:18:16,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:18:16,827 INFO L85 PathProgramCache]: Analyzing trace with hash 2116103951, now seen corresponding path program 1 times [2022-11-23 15:18:16,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:18:16,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742725623] [2022-11-23 15:18:16,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:18:16,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:18:18,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:18:22,765 INFO L134 CoverageAnalysis]: Checked inductivity of 224070 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 224070 trivial. 0 not checked. [2022-11-23 15:18:22,766 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:18:22,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742725623] [2022-11-23 15:18:22,766 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742725623] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:18:22,766 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:18:22,767 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:18:22,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948880561] [2022-11-23 15:18:22,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:18:22,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:18:22,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:18:22,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:18:22,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:18:22,771 INFO L87 Difference]: Start difference. First operand 16129 states and 24881 transitions. Second operand has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 2 states have call successors, (273), 2 states have call predecessors, (273), 1 states have return successors, (269), 2 states have call predecessors, (269), 2 states have call successors, (269) [2022-11-23 15:18:24,924 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:18:27,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:18:27,047 INFO L93 Difference]: Finished difference Result 47194 states and 72846 transitions. [2022-11-23 15:18:27,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:18:27,048 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 2 states have call successors, (273), 2 states have call predecessors, (273), 1 states have return successors, (269), 2 states have call predecessors, (269), 2 states have call successors, (269) Word has length 2823 [2022-11-23 15:18:27,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:18:27,212 INFO L225 Difference]: With dead ends: 47194 [2022-11-23 15:18:27,212 INFO L226 Difference]: Without dead ends: 31601 [2022-11-23 15:18:27,299 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:18:27,303 INFO L413 NwaCegarLoop]: 4237 mSDtfsCounter, 3013 mSDsluCounter, 3674 mSDsCounter, 0 mSdLazyCounter, 343 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3013 SdHoareTripleChecker+Valid, 7911 SdHoareTripleChecker+Invalid, 345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 343 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:18:27,304 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3013 Valid, 7911 Invalid, 345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 343 Invalid, 1 Unknown, 0 Unchecked, 3.1s Time] [2022-11-23 15:18:27,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31601 states. [2022-11-23 15:18:29,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31601 to 31577. [2022-11-23 15:18:30,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31577 states, 22061 states have (on average 1.4324373328498254) internal successors, (31601), 22114 states have internal predecessors, (31601), 8570 states have call successors, (8570), 946 states have call predecessors, (8570), 945 states have return successors, (8562), 8532 states have call predecessors, (8562), 8562 states have call successors, (8562) [2022-11-23 15:18:30,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31577 states to 31577 states and 48733 transitions. [2022-11-23 15:18:30,233 INFO L78 Accepts]: Start accepts. Automaton has 31577 states and 48733 transitions. Word has length 2823 [2022-11-23 15:18:30,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:18:30,237 INFO L495 AbstractCegarLoop]: Abstraction has 31577 states and 48733 transitions. [2022-11-23 15:18:30,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 2 states have call successors, (273), 2 states have call predecessors, (273), 1 states have return successors, (269), 2 states have call predecessors, (269), 2 states have call successors, (269) [2022-11-23 15:18:30,238 INFO L276 IsEmpty]: Start isEmpty. Operand 31577 states and 48733 transitions. [2022-11-23 15:18:30,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2826 [2022-11-23 15:18:30,399 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:18:30,400 INFO L195 NwaCegarLoop]: trace histogram [210, 210, 210, 210, 210, 210, 210, 210, 210, 56, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:18:30,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-23 15:18:30,401 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:18:30,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:18:30,402 INFO L85 PathProgramCache]: Analyzing trace with hash 844188593, now seen corresponding path program 1 times [2022-11-23 15:18:30,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:18:30,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525986631] [2022-11-23 15:18:30,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:18:30,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:18:32,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:18:35,724 INFO L134 CoverageAnalysis]: Checked inductivity of 224070 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 224070 trivial. 0 not checked. [2022-11-23 15:18:35,724 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:18:35,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525986631] [2022-11-23 15:18:35,725 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525986631] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:18:35,725 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:18:35,725 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:18:35,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004699652] [2022-11-23 15:18:35,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:18:35,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:18:35,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:18:35,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:18:35,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:18:35,729 INFO L87 Difference]: Start difference. First operand 31577 states and 48733 transitions. Second operand has 3 states, 3 states have (on average 97.33333333333333) internal successors, (292), 3 states have internal predecessors, (292), 2 states have call successors, (273), 2 states have call predecessors, (273), 1 states have return successors, (269), 2 states have call predecessors, (269), 2 states have call successors, (269) [2022-11-23 15:18:37,847 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:18:40,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:18:40,890 INFO L93 Difference]: Finished difference Result 93402 states and 144186 transitions. [2022-11-23 15:18:40,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:18:40,890 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 97.33333333333333) internal successors, (292), 3 states have internal predecessors, (292), 2 states have call successors, (273), 2 states have call predecessors, (273), 1 states have return successors, (269), 2 states have call predecessors, (269), 2 states have call successors, (269) Word has length 2825 [2022-11-23 15:18:40,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:18:41,248 INFO L225 Difference]: With dead ends: 93402 [2022-11-23 15:18:41,248 INFO L226 Difference]: Without dead ends: 62361 [2022-11-23 15:18:41,423 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:18:41,425 INFO L413 NwaCegarLoop]: 4250 mSDtfsCounter, 3005 mSDsluCounter, 3674 mSDsCounter, 0 mSdLazyCounter, 343 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3005 SdHoareTripleChecker+Valid, 7924 SdHoareTripleChecker+Invalid, 345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 343 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-11-23 15:18:41,427 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3005 Valid, 7924 Invalid, 345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 343 Invalid, 1 Unknown, 0 Unchecked, 3.0s Time] [2022-11-23 15:18:41,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62361 states. [2022-11-23 15:18:45,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62361 to 62329. [2022-11-23 15:18:45,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62329 states, 43661 states have (on average 1.4350793614438515) internal successors, (62657), 43762 states have internal predecessors, (62657), 16778 states have call successors, (16778), 1890 states have call predecessors, (16778), 1889 states have return successors, (16770), 16708 states have call predecessors, (16770), 16770 states have call successors, (16770) [2022-11-23 15:18:45,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62329 states to 62329 states and 96205 transitions. [2022-11-23 15:18:45,722 INFO L78 Accepts]: Start accepts. Automaton has 62329 states and 96205 transitions. Word has length 2825 [2022-11-23 15:18:45,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:18:45,725 INFO L495 AbstractCegarLoop]: Abstraction has 62329 states and 96205 transitions. [2022-11-23 15:18:45,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 97.33333333333333) internal successors, (292), 3 states have internal predecessors, (292), 2 states have call successors, (273), 2 states have call predecessors, (273), 1 states have return successors, (269), 2 states have call predecessors, (269), 2 states have call successors, (269) [2022-11-23 15:18:45,726 INFO L276 IsEmpty]: Start isEmpty. Operand 62329 states and 96205 transitions. [2022-11-23 15:18:46,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2824 [2022-11-23 15:18:46,036 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:18:46,037 INFO L195 NwaCegarLoop]: trace histogram [210, 210, 210, 210, 210, 210, 210, 210, 210, 56, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:18:46,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-23 15:18:46,037 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:18:46,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:18:46,038 INFO L85 PathProgramCache]: Analyzing trace with hash -679293934, now seen corresponding path program 1 times [2022-11-23 15:18:46,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:18:46,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411696988] [2022-11-23 15:18:46,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:18:46,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:18:47,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:18:51,192 INFO L134 CoverageAnalysis]: Checked inductivity of 224070 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 224070 trivial. 0 not checked. [2022-11-23 15:18:51,192 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:18:51,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411696988] [2022-11-23 15:18:51,193 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411696988] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:18:51,193 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:18:51,194 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:18:51,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282444916] [2022-11-23 15:18:51,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:18:51,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:18:51,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:18:51,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:18:51,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:18:51,198 INFO L87 Difference]: Start difference. First operand 62329 states and 96205 transitions. Second operand has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 2 states have call successors, (273), 2 states have call predecessors, (273), 1 states have return successors, (269), 2 states have call predecessors, (269), 2 states have call successors, (269) [2022-11-23 15:18:53,334 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:18:57,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:18:57,977 INFO L93 Difference]: Finished difference Result 185682 states and 286658 transitions. [2022-11-23 15:18:57,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:18:57,978 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 2 states have call successors, (273), 2 states have call predecessors, (273), 1 states have return successors, (269), 2 states have call predecessors, (269), 2 states have call successors, (269) Word has length 2823 [2022-11-23 15:18:57,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:18:58,787 INFO L225 Difference]: With dead ends: 185682 [2022-11-23 15:18:58,787 INFO L226 Difference]: Without dead ends: 123889 [2022-11-23 15:18:59,181 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:18:59,181 INFO L413 NwaCegarLoop]: 4268 mSDtfsCounter, 3019 mSDsluCounter, 3677 mSDsCounter, 0 mSdLazyCounter, 340 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3019 SdHoareTripleChecker+Valid, 7945 SdHoareTripleChecker+Invalid, 342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 340 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-11-23 15:18:59,182 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3019 Valid, 7945 Invalid, 342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 340 Invalid, 1 Unknown, 0 Unchecked, 3.0s Time] [2022-11-23 15:18:59,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123889 states.