./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--asb100.ko-main.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f 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_454f186e-247f-4846-b89b-e6a48f0ffa38/bin/utaipan-Xvt2sAort0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_454f186e-247f-4846-b89b-e6a48f0ffa38/bin/utaipan-Xvt2sAort0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_454f186e-247f-4846-b89b-e6a48f0ffa38/bin/utaipan-Xvt2sAort0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_454f186e-247f-4846-b89b-e6a48f0ffa38/bin/utaipan-Xvt2sAort0/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--asb100.ko-main.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_454f186e-247f-4846-b89b-e6a48f0ffa38/bin/utaipan-Xvt2sAort0/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_454f186e-247f-4846-b89b-e6a48f0ffa38/bin/utaipan-Xvt2sAort0 --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 a172742698d01ea3d6a7e277a97e7636a1425e62fd3035feb511b810f7b798f5 --- 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-e04fb08 [2022-11-16 15:56:52,198 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 15:56:52,200 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 15:56:52,228 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 15:56:52,231 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 15:56:52,235 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 15:56:52,237 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 15:56:52,241 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 15:56:52,244 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 15:56:52,245 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 15:56:52,246 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 15:56:52,248 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 15:56:52,248 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 15:56:52,249 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 15:56:52,251 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 15:56:52,252 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 15:56:52,253 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 15:56:52,254 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 15:56:52,256 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 15:56:52,258 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 15:56:52,259 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 15:56:52,265 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 15:56:52,266 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 15:56:52,267 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 15:56:52,271 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 15:56:52,271 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 15:56:52,272 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 15:56:52,273 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 15:56:52,278 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 15:56:52,280 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 15:56:52,280 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 15:56:52,281 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 15:56:52,282 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 15:56:52,283 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 15:56:52,287 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 15:56:52,288 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 15:56:52,289 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 15:56:52,289 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 15:56:52,290 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 15:56:52,291 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 15:56:52,293 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 15:56:52,294 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_454f186e-247f-4846-b89b-e6a48f0ffa38/bin/utaipan-Xvt2sAort0/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-16 15:56:52,337 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 15:56:52,338 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 15:56:52,339 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 15:56:52,339 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 15:56:52,340 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 15:56:52,340 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 15:56:52,340 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-16 15:56:52,340 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-16 15:56:52,341 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-16 15:56:52,341 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-16 15:56:52,342 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-16 15:56:52,342 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-16 15:56:52,342 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-16 15:56:52,343 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-16 15:56:52,343 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-16 15:56:52,343 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-16 15:56:52,343 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-16 15:56:52,343 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-16 15:56:52,344 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 15:56:52,344 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 15:56:52,345 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 15:56:52,345 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 15:56:52,345 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 15:56:52,347 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 15:56:52,347 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 15:56:52,347 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 15:56:52,347 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 15:56:52,347 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 15:56:52,348 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 15:56:52,348 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 15:56:52,348 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 15:56:52,349 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-16 15:56:52,349 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 15:56:52,350 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 15:56:52,350 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-16 15:56:52,350 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 15:56:52,350 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 15:56:52,350 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-16 15:56:52,351 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_454f186e-247f-4846-b89b-e6a48f0ffa38/bin/utaipan-Xvt2sAort0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_454f186e-247f-4846-b89b-e6a48f0ffa38/bin/utaipan-Xvt2sAort0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a172742698d01ea3d6a7e277a97e7636a1425e62fd3035feb511b810f7b798f5 [2022-11-16 15:56:52,661 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 15:56:52,696 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 15:56:52,699 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 15:56:52,701 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 15:56:52,701 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 15:56:52,703 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_454f186e-247f-4846-b89b-e6a48f0ffa38/bin/utaipan-Xvt2sAort0/../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--asb100.ko-main.cil.out.i [2022-11-16 15:56:52,779 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_454f186e-247f-4846-b89b-e6a48f0ffa38/bin/utaipan-Xvt2sAort0/data/f9bac7e85/5a60838f094e408b9e992b81ef9f6b4a/FLAGb8b2e895f [2022-11-16 15:56:53,604 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 15:56:53,604 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_454f186e-247f-4846-b89b-e6a48f0ffa38/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--asb100.ko-main.cil.out.i [2022-11-16 15:56:53,644 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_454f186e-247f-4846-b89b-e6a48f0ffa38/bin/utaipan-Xvt2sAort0/data/f9bac7e85/5a60838f094e408b9e992b81ef9f6b4a/FLAGb8b2e895f [2022-11-16 15:56:54,162 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_454f186e-247f-4846-b89b-e6a48f0ffa38/bin/utaipan-Xvt2sAort0/data/f9bac7e85/5a60838f094e408b9e992b81ef9f6b4a [2022-11-16 15:56:54,164 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 15:56:54,166 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 15:56:54,169 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 15:56:54,170 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 15:56:54,173 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 15:56:54,175 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 03:56:54" (1/1) ... [2022-11-16 15:56:54,176 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21b3bc82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:56:54, skipping insertion in model container [2022-11-16 15:56:54,176 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 03:56:54" (1/1) ... [2022-11-16 15:56:54,184 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 15:56:54,315 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 15:56:55,439 WARN L229 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_454f186e-247f-4846-b89b-e6a48f0ffa38/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--asb100.ko-main.cil.out.i[168612,168625] [2022-11-16 15:56:55,596 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 15:56:55,686 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 15:56:55,896 WARN L229 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_454f186e-247f-4846-b89b-e6a48f0ffa38/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--asb100.ko-main.cil.out.i[168612,168625] [2022-11-16 15:56:55,909 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 15:56:56,147 INFO L208 MainTranslator]: Completed translation [2022-11-16 15:56:56,147 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:56:56 WrapperNode [2022-11-16 15:56:56,148 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 15:56:56,149 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 15:56:56,149 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 15:56:56,149 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 15:56:56,156 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:56:56" (1/1) ... [2022-11-16 15:56:56,242 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:56:56" (1/1) ... [2022-11-16 15:56:56,425 INFO L138 Inliner]: procedures = 184, calls = 2049, calls flagged for inlining = 74, calls inlined = 66, statements flattened = 5226 [2022-11-16 15:56:56,426 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 15:56:56,427 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 15:56:56,427 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 15:56:56,427 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 15:56:56,436 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:56:56" (1/1) ... [2022-11-16 15:56:56,437 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:56:56" (1/1) ... [2022-11-16 15:56:56,490 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:56:56" (1/1) ... [2022-11-16 15:56:56,500 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:56:56" (1/1) ... [2022-11-16 15:56:56,661 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:56:56" (1/1) ... [2022-11-16 15:56:56,691 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:56:56" (1/1) ... [2022-11-16 15:56:56,732 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:56:56" (1/1) ... [2022-11-16 15:56:56,751 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:56:56" (1/1) ... [2022-11-16 15:56:56,783 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 15:56:56,785 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 15:56:56,785 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 15:56:56,786 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 15:56:56,787 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:56:56" (1/1) ... [2022-11-16 15:56:56,794 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 15:56:56,806 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_454f186e-247f-4846-b89b-e6a48f0ffa38/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 15:56:56,824 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_454f186e-247f-4846-b89b-e6a48f0ffa38/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 15:56:56,839 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_454f186e-247f-4846-b89b-e6a48f0ffa38/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 15:56:56,875 INFO L130 BoogieDeclarations]: Found specification of procedure show_fan [2022-11-16 15:56:56,875 INFO L138 BoogieDeclarations]: Found implementation of procedure show_fan [2022-11-16 15:56:56,875 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2022-11-16 15:56:56,876 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2022-11-16 15:56:56,876 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_smbus_read_word_swapped [2022-11-16 15:56:56,876 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_smbus_read_word_swapped [2022-11-16 15:56:56,876 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_update_lock_of_asb100_data [2022-11-16 15:56:56,876 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_update_lock_of_asb100_data [2022-11-16 15:56:56,877 INFO L130 BoogieDeclarations]: Found specification of procedure show_in_max [2022-11-16 15:56:56,877 INFO L138 BoogieDeclarations]: Found implementation of procedure show_in_max [2022-11-16 15:56:56,877 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_update_lock_of_asb100_data [2022-11-16 15:56:56,877 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_update_lock_of_asb100_data [2022-11-16 15:56:56,877 INFO L130 BoogieDeclarations]: Found specification of procedure set_in_max [2022-11-16 15:56:56,877 INFO L138 BoogieDeclarations]: Found implementation of procedure set_in_max [2022-11-16 15:56:56,878 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 15:56:56,878 INFO L130 BoogieDeclarations]: Found specification of procedure set_temp_hyst [2022-11-16 15:56:56,878 INFO L138 BoogieDeclarations]: Found implementation of procedure set_temp_hyst [2022-11-16 15:56:56,878 INFO L130 BoogieDeclarations]: Found specification of procedure FAN_TO_REG [2022-11-16 15:56:56,878 INFO L138 BoogieDeclarations]: Found implementation of procedure FAN_TO_REG [2022-11-16 15:56:56,879 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_remove_group [2022-11-16 15:56:56,879 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_remove_group [2022-11-16 15:56:56,879 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_get_clientdata [2022-11-16 15:56:56,879 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_get_clientdata [2022-11-16 15:56:56,879 INFO L130 BoogieDeclarations]: Found specification of procedure show_temp_hyst [2022-11-16 15:56:56,879 INFO L138 BoogieDeclarations]: Found implementation of procedure show_temp_hyst [2022-11-16 15:56:56,880 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf_temp_from_reg [2022-11-16 15:56:56,880 INFO L138 BoogieDeclarations]: Found implementation of procedure sprintf_temp_from_reg [2022-11-16 15:56:56,880 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-16 15:56:56,881 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-16 15:56:56,881 INFO L130 BoogieDeclarations]: Found specification of procedure asb100_update_device [2022-11-16 15:56:56,881 INFO L138 BoogieDeclarations]: Found implementation of procedure asb100_update_device [2022-11-16 15:56:56,881 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_smbus_write_word_swapped [2022-11-16 15:56:56,881 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_smbus_write_word_swapped [2022-11-16 15:56:56,882 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_lock_of_asb100_data [2022-11-16 15:56:56,882 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_lock_of_asb100_data [2022-11-16 15:56:56,882 INFO L130 BoogieDeclarations]: Found specification of procedure show_fan_div [2022-11-16 15:56:56,882 INFO L138 BoogieDeclarations]: Found implementation of procedure show_fan_div [2022-11-16 15:56:56,883 INFO L130 BoogieDeclarations]: Found specification of procedure set_fan_div [2022-11-16 15:56:56,883 INFO L138 BoogieDeclarations]: Found implementation of procedure set_fan_div [2022-11-16 15:56:56,883 INFO L130 BoogieDeclarations]: Found specification of procedure LM75_TEMP_TO_REG [2022-11-16 15:56:56,883 INFO L138 BoogieDeclarations]: Found implementation of procedure LM75_TEMP_TO_REG [2022-11-16 15:56:56,883 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 15:56:56,884 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-16 15:56:56,884 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-16 15:56:56,884 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-16 15:56:56,884 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-16 15:56:56,885 INFO L130 BoogieDeclarations]: Found specification of procedure show_temp [2022-11-16 15:56:56,885 INFO L138 BoogieDeclarations]: Found implementation of procedure show_temp [2022-11-16 15:56:56,886 INFO L130 BoogieDeclarations]: Found specification of procedure set_temp_max [2022-11-16 15:56:56,886 INFO L138 BoogieDeclarations]: Found implementation of procedure set_temp_max [2022-11-16 15:56:56,887 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-16 15:56:56,887 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-16 15:56:56,888 INFO L130 BoogieDeclarations]: Found specification of procedure IN_TO_REG [2022-11-16 15:56:56,888 INFO L138 BoogieDeclarations]: Found implementation of procedure IN_TO_REG [2022-11-16 15:56:56,888 INFO L130 BoogieDeclarations]: Found specification of procedure set_in_min [2022-11-16 15:56:56,888 INFO L138 BoogieDeclarations]: Found implementation of procedure set_in_min [2022-11-16 15:56:56,888 INFO L130 BoogieDeclarations]: Found specification of procedure asb100_write_value [2022-11-16 15:56:56,889 INFO L138 BoogieDeclarations]: Found implementation of procedure asb100_write_value [2022-11-16 15:56:56,889 INFO L130 BoogieDeclarations]: Found specification of procedure TEMP_TO_REG [2022-11-16 15:56:56,889 INFO L138 BoogieDeclarations]: Found implementation of procedure TEMP_TO_REG [2022-11-16 15:56:56,889 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-16 15:56:56,889 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-11-16 15:56:56,889 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-11-16 15:56:56,890 INFO L130 BoogieDeclarations]: Found specification of procedure show_in_min [2022-11-16 15:56:56,890 INFO L138 BoogieDeclarations]: Found implementation of procedure show_in_min [2022-11-16 15:56:56,890 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 15:56:56,890 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-16 15:56:56,890 INFO L130 BoogieDeclarations]: Found specification of procedure set_fan_min [2022-11-16 15:56:56,891 INFO L138 BoogieDeclarations]: Found implementation of procedure set_fan_min [2022-11-16 15:56:56,891 INFO L130 BoogieDeclarations]: Found specification of procedure show_fan_min [2022-11-16 15:56:56,891 INFO L138 BoogieDeclarations]: Found implementation of procedure show_fan_min [2022-11-16 15:56:56,892 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 15:56:56,892 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_lock_of_asb100_data [2022-11-16 15:56:56,892 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_lock_of_asb100_data [2022-11-16 15:56:56,892 INFO L130 BoogieDeclarations]: Found specification of procedure show_temp_max [2022-11-16 15:56:56,893 INFO L138 BoogieDeclarations]: Found implementation of procedure show_temp_max [2022-11-16 15:56:56,893 INFO L130 BoogieDeclarations]: Found specification of procedure show_alarm [2022-11-16 15:56:56,893 INFO L138 BoogieDeclarations]: Found implementation of procedure show_alarm [2022-11-16 15:56:56,893 INFO L130 BoogieDeclarations]: Found specification of procedure SENSORS_LIMIT [2022-11-16 15:56:56,893 INFO L138 BoogieDeclarations]: Found implementation of procedure SENSORS_LIMIT [2022-11-16 15:56:56,893 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_smbus_read_byte_data [2022-11-16 15:56:56,894 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_smbus_read_byte_data [2022-11-16 15:56:56,894 INFO L130 BoogieDeclarations]: Found specification of procedure show_in [2022-11-16 15:56:56,894 INFO L138 BoogieDeclarations]: Found implementation of procedure show_in [2022-11-16 15:56:56,895 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-16 15:56:56,895 INFO L130 BoogieDeclarations]: Found specification of procedure kstrtol [2022-11-16 15:56:56,895 INFO L138 BoogieDeclarations]: Found implementation of procedure kstrtol [2022-11-16 15:56:56,895 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 15:56:56,896 INFO L130 BoogieDeclarations]: Found specification of procedure IN_FROM_REG [2022-11-16 15:56:56,897 INFO L138 BoogieDeclarations]: Found implementation of procedure IN_FROM_REG [2022-11-16 15:56:56,897 INFO L130 BoogieDeclarations]: Found specification of procedure kstrtoul [2022-11-16 15:56:56,897 INFO L138 BoogieDeclarations]: Found implementation of procedure kstrtoul [2022-11-16 15:56:56,898 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-16 15:56:56,898 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_unregister_device [2022-11-16 15:56:56,898 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_unregister_device [2022-11-16 15:56:56,898 INFO L130 BoogieDeclarations]: Found specification of procedure asb100_detect [2022-11-16 15:56:56,899 INFO L138 BoogieDeclarations]: Found implementation of procedure asb100_detect [2022-11-16 15:56:56,899 INFO L130 BoogieDeclarations]: Found specification of procedure asb100_read_value [2022-11-16 15:56:56,899 INFO L138 BoogieDeclarations]: Found implementation of procedure asb100_read_value [2022-11-16 15:56:56,899 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2022-11-16 15:56:56,899 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2022-11-16 15:56:56,900 INFO L130 BoogieDeclarations]: Found specification of procedure FAN_FROM_REG [2022-11-16 15:56:56,901 INFO L138 BoogieDeclarations]: Found implementation of procedure FAN_FROM_REG [2022-11-16 15:56:56,901 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2022-11-16 15:56:56,902 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2022-11-16 15:56:56,902 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_new_dummy [2022-11-16 15:56:56,902 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_new_dummy [2022-11-16 15:56:56,902 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 15:56:56,902 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_smbus_write_byte_data [2022-11-16 15:56:56,903 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_smbus_write_byte_data [2022-11-16 15:56:56,904 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 15:56:56,904 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 15:56:56,904 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-11-16 15:56:56,904 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-11-16 15:56:57,640 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 15:56:57,643 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 15:57:03,646 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 15:57:05,502 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 15:57:05,503 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-16 15:57:05,507 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 03:57:05 BoogieIcfgContainer [2022-11-16 15:57:05,507 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 15:57:05,509 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 15:57:05,510 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 15:57:05,513 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 15:57:05,514 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 03:56:54" (1/3) ... [2022-11-16 15:57:05,514 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c8c313a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 03:57:05, skipping insertion in model container [2022-11-16 15:57:05,514 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:56:56" (2/3) ... [2022-11-16 15:57:05,515 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c8c313a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 03:57:05, skipping insertion in model container [2022-11-16 15:57:05,515 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 03:57:05" (3/3) ... [2022-11-16 15:57:05,516 INFO L112 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--hwmon--asb100.ko-main.cil.out.i [2022-11-16 15:57:05,537 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 15:57:05,537 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 15:57:05,624 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 15:57:05,630 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;@35eee3ed, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 15:57:05,631 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-16 15:57:05,639 INFO L276 IsEmpty]: Start isEmpty. Operand has 1020 states, 690 states have (on average 1.5333333333333334) internal successors, (1058), 704 states have internal predecessors, (1058), 277 states have call successors, (277), 51 states have call predecessors, (277), 51 states have return successors, (277), 275 states have call predecessors, (277), 277 states have call successors, (277) [2022-11-16 15:57:05,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-11-16 15:57:05,653 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 15:57:05,654 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 15:57:05,654 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 15:57:05,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 15:57:05,660 INFO L85 PathProgramCache]: Analyzing trace with hash -1773342205, now seen corresponding path program 1 times [2022-11-16 15:57:05,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 15:57:05,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322772814] [2022-11-16 15:57:05,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 15:57:05,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 15:57:06,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 15:57:06,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 15:57:06,637 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 15:57:06,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322772814] [2022-11-16 15:57:06,638 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322772814] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 15:57:06,638 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 15:57:06,639 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 15:57:06,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201952918] [2022-11-16 15:57:06,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 15:57:06,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 15:57:06,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 15:57:06,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 15:57:06,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 15:57:06,699 INFO L87 Difference]: Start difference. First operand has 1020 states, 690 states have (on average 1.5333333333333334) internal successors, (1058), 704 states have internal predecessors, (1058), 277 states have call successors, (277), 51 states have call predecessors, (277), 51 states have return successors, (277), 275 states have call predecessors, (277), 277 states have call successors, (277) Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-16 15:57:07,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 15:57:07,826 INFO L93 Difference]: Finished difference Result 3047 states and 5120 transitions. [2022-11-16 15:57:07,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 15:57:07,829 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 31 [2022-11-16 15:57:07,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 15:57:07,868 INFO L225 Difference]: With dead ends: 3047 [2022-11-16 15:57:07,868 INFO L226 Difference]: Without dead ends: 2024 [2022-11-16 15:57:07,887 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 [2022-11-16 15:57:07,891 INFO L413 NwaCegarLoop]: 1712 mSDtfsCounter, 1580 mSDsluCounter, 1439 mSDsCounter, 0 mSdLazyCounter, 317 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1580 SdHoareTripleChecker+Valid, 3151 SdHoareTripleChecker+Invalid, 318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-16 15:57:07,893 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1580 Valid, 3151 Invalid, 318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 317 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-16 15:57:07,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2024 states. [2022-11-16 15:57:08,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2024 to 2007. [2022-11-16 15:57:08,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2007 states, 1363 states have (on average 1.5297138664710197) internal successors, (2085), 1379 states have internal predecessors, (2085), 543 states have call successors, (543), 101 states have call predecessors, (543), 100 states have return successors, (534), 530 states have call predecessors, (534), 534 states have call successors, (534) [2022-11-16 15:57:08,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2007 states to 2007 states and 3162 transitions. [2022-11-16 15:57:08,134 INFO L78 Accepts]: Start accepts. Automaton has 2007 states and 3162 transitions. Word has length 31 [2022-11-16 15:57:08,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 15:57:08,135 INFO L495 AbstractCegarLoop]: Abstraction has 2007 states and 3162 transitions. [2022-11-16 15:57:08,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-16 15:57:08,136 INFO L276 IsEmpty]: Start isEmpty. Operand 2007 states and 3162 transitions. [2022-11-16 15:57:08,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-16 15:57:08,144 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 15:57:08,145 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 15:57:08,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 15:57:08,145 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 15:57:08,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 15:57:08,146 INFO L85 PathProgramCache]: Analyzing trace with hash -1351328874, now seen corresponding path program 1 times [2022-11-16 15:57:08,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 15:57:08,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813659421] [2022-11-16 15:57:08,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 15:57:08,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 15:57:08,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 15:57:08,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 15:57:08,759 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 15:57:08,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813659421] [2022-11-16 15:57:08,760 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813659421] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 15:57:08,760 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 15:57:08,761 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 15:57:08,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159877814] [2022-11-16 15:57:08,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 15:57:08,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 15:57:08,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 15:57:08,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 15:57:08,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 15:57:08,767 INFO L87 Difference]: Start difference. First operand 2007 states and 3162 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-16 15:57:09,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 15:57:09,561 INFO L93 Difference]: Finished difference Result 5974 states and 9410 transitions. [2022-11-16 15:57:09,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 15:57:09,562 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 34 [2022-11-16 15:57:09,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 15:57:09,594 INFO L225 Difference]: With dead ends: 5974 [2022-11-16 15:57:09,594 INFO L226 Difference]: Without dead ends: 3968 [2022-11-16 15:57:09,609 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 [2022-11-16 15:57:09,611 INFO L413 NwaCegarLoop]: 1716 mSDtfsCounter, 1551 mSDsluCounter, 1439 mSDsCounter, 0 mSdLazyCounter, 315 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1551 SdHoareTripleChecker+Valid, 3155 SdHoareTripleChecker+Invalid, 316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-16 15:57:09,611 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1551 Valid, 3155 Invalid, 316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 315 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-16 15:57:09,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3968 states. [2022-11-16 15:57:09,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3968 to 3951. [2022-11-16 15:57:09,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3951 states, 2691 states have (on average 1.5302861389817912) internal successors, (4118), 2715 states have internal predecessors, (4118), 1059 states have call successors, (1059), 201 states have call predecessors, (1059), 200 states have return successors, (1050), 1042 states have call predecessors, (1050), 1050 states have call successors, (1050) [2022-11-16 15:57:09,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3951 states to 3951 states and 6227 transitions. [2022-11-16 15:57:09,835 INFO L78 Accepts]: Start accepts. Automaton has 3951 states and 6227 transitions. Word has length 34 [2022-11-16 15:57:09,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 15:57:09,836 INFO L495 AbstractCegarLoop]: Abstraction has 3951 states and 6227 transitions. [2022-11-16 15:57:09,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-16 15:57:09,836 INFO L276 IsEmpty]: Start isEmpty. Operand 3951 states and 6227 transitions. [2022-11-16 15:57:09,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-16 15:57:09,838 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 15:57:09,838 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 15:57:09,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 15:57:09,838 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 15:57:09,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 15:57:09,839 INFO L85 PathProgramCache]: Analyzing trace with hash 65899667, now seen corresponding path program 1 times [2022-11-16 15:57:09,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 15:57:09,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416212756] [2022-11-16 15:57:09,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 15:57:09,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 15:57:09,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 15:57:10,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 15:57:10,329 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 15:57:10,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416212756] [2022-11-16 15:57:10,332 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416212756] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 15:57:10,333 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 15:57:10,334 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 15:57:10,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479419121] [2022-11-16 15:57:10,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 15:57:10,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 15:57:10,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 15:57:10,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 15:57:10,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 15:57:10,340 INFO L87 Difference]: Start difference. First operand 3951 states and 6227 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-16 15:57:11,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 15:57:11,343 INFO L93 Difference]: Finished difference Result 11770 states and 18545 transitions. [2022-11-16 15:57:11,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 15:57:11,344 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 35 [2022-11-16 15:57:11,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 15:57:11,404 INFO L225 Difference]: With dead ends: 11770 [2022-11-16 15:57:11,404 INFO L226 Difference]: Without dead ends: 7820 [2022-11-16 15:57:11,434 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 [2022-11-16 15:57:11,435 INFO L413 NwaCegarLoop]: 1742 mSDtfsCounter, 1553 mSDsluCounter, 1439 mSDsCounter, 0 mSdLazyCounter, 318 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1553 SdHoareTripleChecker+Valid, 3181 SdHoareTripleChecker+Invalid, 319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-16 15:57:11,436 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1553 Valid, 3181 Invalid, 319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 318 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-16 15:57:11,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7820 states. [2022-11-16 15:57:11,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7820 to 7803. [2022-11-16 15:57:11,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7803 states, 5325 states have (on average 1.5305164319248827) internal successors, (8150), 5365 states have internal predecessors, (8150), 2077 states have call successors, (2077), 401 states have call predecessors, (2077), 400 states have return successors, (2068), 2052 states have call predecessors, (2068), 2068 states have call successors, (2068) [2022-11-16 15:57:11,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7803 states to 7803 states and 12295 transitions. [2022-11-16 15:57:11,949 INFO L78 Accepts]: Start accepts. Automaton has 7803 states and 12295 transitions. Word has length 35 [2022-11-16 15:57:11,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 15:57:11,950 INFO L495 AbstractCegarLoop]: Abstraction has 7803 states and 12295 transitions. [2022-11-16 15:57:11,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-16 15:57:11,950 INFO L276 IsEmpty]: Start isEmpty. Operand 7803 states and 12295 transitions. [2022-11-16 15:57:11,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-16 15:57:11,951 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 15:57:11,952 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 15:57:11,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 15:57:11,952 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 15:57:11,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 15:57:11,953 INFO L85 PathProgramCache]: Analyzing trace with hash 1955369645, now seen corresponding path program 1 times [2022-11-16 15:57:11,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 15:57:11,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692646779] [2022-11-16 15:57:11,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 15:57:11,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 15:57:12,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 15:57:12,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 15:57:12,369 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 15:57:12,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692646779] [2022-11-16 15:57:12,370 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692646779] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 15:57:12,370 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 15:57:12,370 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 15:57:12,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077535585] [2022-11-16 15:57:12,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 15:57:12,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 15:57:12,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 15:57:12,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 15:57:12,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 15:57:12,372 INFO L87 Difference]: Start difference. First operand 7803 states and 12295 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-16 15:57:13,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 15:57:13,515 INFO L93 Difference]: Finished difference Result 23342 states and 36769 transitions. [2022-11-16 15:57:13,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 15:57:13,516 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 32 [2022-11-16 15:57:13,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 15:57:13,649 INFO L225 Difference]: With dead ends: 23342 [2022-11-16 15:57:13,649 INFO L226 Difference]: Without dead ends: 15540 [2022-11-16 15:57:13,703 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 [2022-11-16 15:57:13,709 INFO L413 NwaCegarLoop]: 1771 mSDtfsCounter, 1577 mSDsluCounter, 1438 mSDsCounter, 0 mSdLazyCounter, 322 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1577 SdHoareTripleChecker+Valid, 3209 SdHoareTripleChecker+Invalid, 323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-16 15:57:13,710 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1577 Valid, 3209 Invalid, 323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 322 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-16 15:57:13,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15540 states. [2022-11-16 15:57:14,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15540 to 15523. [2022-11-16 15:57:14,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15523 states, 10593 states have (on average 1.5291230057585197) internal successors, (16198), 10665 states have internal predecessors, (16198), 4129 states have call successors, (4129), 801 states have call predecessors, (4129), 800 states have return successors, (4120), 4088 states have call predecessors, (4120), 4120 states have call successors, (4120) [2022-11-16 15:57:14,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15523 states to 15523 states and 24447 transitions. [2022-11-16 15:57:14,654 INFO L78 Accepts]: Start accepts. Automaton has 15523 states and 24447 transitions. Word has length 32 [2022-11-16 15:57:14,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 15:57:14,654 INFO L495 AbstractCegarLoop]: Abstraction has 15523 states and 24447 transitions. [2022-11-16 15:57:14,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-16 15:57:14,655 INFO L276 IsEmpty]: Start isEmpty. Operand 15523 states and 24447 transitions. [2022-11-16 15:57:14,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-16 15:57:14,657 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 15:57:14,657 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 15:57:14,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 15:57:14,657 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 15:57:14,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 15:57:14,658 INFO L85 PathProgramCache]: Analyzing trace with hash -1921789939, now seen corresponding path program 1 times [2022-11-16 15:57:14,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 15:57:14,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906544826] [2022-11-16 15:57:14,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 15:57:14,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 15:57:14,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 15:57:15,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 15:57:15,021 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 15:57:15,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906544826] [2022-11-16 15:57:15,022 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906544826] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 15:57:15,022 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 15:57:15,022 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 15:57:15,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339269113] [2022-11-16 15:57:15,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 15:57:15,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 15:57:15,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 15:57:15,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 15:57:15,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 15:57:15,024 INFO L87 Difference]: Start difference. First operand 15523 states and 24447 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-16 15:57:17,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 15:57:17,015 INFO L93 Difference]: Finished difference Result 46502 states and 73225 transitions. [2022-11-16 15:57:17,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 15:57:17,016 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 32 [2022-11-16 15:57:17,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 15:57:17,219 INFO L225 Difference]: With dead ends: 46502 [2022-11-16 15:57:17,220 INFO L226 Difference]: Without dead ends: 30980 [2022-11-16 15:57:17,316 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 [2022-11-16 15:57:17,317 INFO L413 NwaCegarLoop]: 1784 mSDtfsCounter, 1583 mSDsluCounter, 1441 mSDsCounter, 0 mSdLazyCounter, 320 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1583 SdHoareTripleChecker+Valid, 3225 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 320 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-16 15:57:17,317 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1583 Valid, 3225 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 320 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-16 15:57:17,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30980 states. [2022-11-16 15:57:18,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30980 to 30963. [2022-11-16 15:57:18,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30963 states, 21129 states have (on average 1.5280420275450801) internal successors, (32286), 21265 states have internal predecessors, (32286), 8233 states have call successors, (8233), 1601 states have call predecessors, (8233), 1600 states have return successors, (8224), 8160 states have call predecessors, (8224), 8224 states have call successors, (8224) [2022-11-16 15:57:19,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30963 states to 30963 states and 48743 transitions. [2022-11-16 15:57:19,177 INFO L78 Accepts]: Start accepts. Automaton has 30963 states and 48743 transitions. Word has length 32 [2022-11-16 15:57:19,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 15:57:19,177 INFO L495 AbstractCegarLoop]: Abstraction has 30963 states and 48743 transitions. [2022-11-16 15:57:19,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-16 15:57:19,178 INFO L276 IsEmpty]: Start isEmpty. Operand 30963 states and 48743 transitions. [2022-11-16 15:57:19,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-16 15:57:19,179 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 15:57:19,179 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 15:57:19,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 15:57:19,180 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 15:57:19,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 15:57:19,180 INFO L85 PathProgramCache]: Analyzing trace with hash -1798353626, now seen corresponding path program 1 times [2022-11-16 15:57:19,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 15:57:19,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260682470] [2022-11-16 15:57:19,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 15:57:19,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 15:57:19,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 15:57:19,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 15:57:19,796 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 15:57:19,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260682470] [2022-11-16 15:57:19,797 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260682470] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 15:57:19,797 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 15:57:19,797 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 15:57:19,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786870854] [2022-11-16 15:57:19,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 15:57:19,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 15:57:19,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 15:57:19,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 15:57:19,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 15:57:19,801 INFO L87 Difference]: Start difference. First operand 30963 states and 48743 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-16 15:57:22,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 15:57:22,879 INFO L93 Difference]: Finished difference Result 92630 states and 145777 transitions. [2022-11-16 15:57:22,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 15:57:22,880 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 30 [2022-11-16 15:57:22,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 15:57:23,477 INFO L225 Difference]: With dead ends: 92630 [2022-11-16 15:57:23,478 INFO L226 Difference]: Without dead ends: 61668 [2022-11-16 15:57:23,625 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 [2022-11-16 15:57:23,626 INFO L413 NwaCegarLoop]: 1790 mSDtfsCounter, 1579 mSDsluCounter, 1438 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1579 SdHoareTripleChecker+Valid, 3228 SdHoareTripleChecker+Invalid, 324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-16 15:57:23,627 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1579 Valid, 3228 Invalid, 324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 323 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-16 15:57:23,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61668 states. [2022-11-16 15:57:26,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61668 to 61651. [2022-11-16 15:57:26,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61651 states, 42057 states have (on average 1.526642413866895) internal successors, (64206), 42321 states have internal predecessors, (64206), 16393 states have call successors, (16393), 3201 states have call predecessors, (16393), 3200 states have return successors, (16384), 16256 states have call predecessors, (16384), 16384 states have call successors, (16384) [2022-11-16 15:57:27,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61651 states to 61651 states and 96983 transitions. [2022-11-16 15:57:27,529 INFO L78 Accepts]: Start accepts. Automaton has 61651 states and 96983 transitions. Word has length 30 [2022-11-16 15:57:27,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 15:57:27,530 INFO L495 AbstractCegarLoop]: Abstraction has 61651 states and 96983 transitions. [2022-11-16 15:57:27,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-16 15:57:27,531 INFO L276 IsEmpty]: Start isEmpty. Operand 61651 states and 96983 transitions. [2022-11-16 15:57:27,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-16 15:57:27,532 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 15:57:27,532 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 15:57:27,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 15:57:27,533 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 15:57:27,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 15:57:27,534 INFO L85 PathProgramCache]: Analyzing trace with hash 1956628983, now seen corresponding path program 1 times [2022-11-16 15:57:27,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 15:57:27,534 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746835932] [2022-11-16 15:57:27,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 15:57:27,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 15:57:27,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 15:57:27,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 15:57:27,947 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 15:57:27,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746835932] [2022-11-16 15:57:27,948 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746835932] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 15:57:27,948 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 15:57:27,948 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 15:57:27,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777234269] [2022-11-16 15:57:27,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 15:57:27,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 15:57:27,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 15:57:27,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 15:57:27,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 15:57:27,950 INFO L87 Difference]: Start difference. First operand 61651 states and 96983 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-16 15:57:32,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 15:57:32,908 INFO L93 Difference]: Finished difference Result 184438 states and 290049 transitions. [2022-11-16 15:57:32,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 15:57:32,911 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 34 [2022-11-16 15:57:32,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 15:57:33,868 INFO L225 Difference]: With dead ends: 184438 [2022-11-16 15:57:33,868 INFO L226 Difference]: Without dead ends: 122788 [2022-11-16 15:57:34,331 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 [2022-11-16 15:57:34,332 INFO L413 NwaCegarLoop]: 1918 mSDtfsCounter, 1575 mSDsluCounter, 1438 mSDsCounter, 0 mSdLazyCounter, 341 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1575 SdHoareTripleChecker+Valid, 3356 SdHoareTripleChecker+Invalid, 342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-16 15:57:34,332 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1575 Valid, 3356 Invalid, 342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 341 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-16 15:57:34,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122788 states. [2022-11-16 15:57:39,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122788 to 122771. [2022-11-16 15:57:39,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122771 states, 83721 states have (on average 1.5252326178617073) internal successors, (127694), 84241 states have internal predecessors, (127694), 32649 states have call successors, (32649), 6401 states have call predecessors, (32649), 6400 states have return successors, (32640), 32384 states have call predecessors, (32640), 32640 states have call successors, (32640) [2022-11-16 15:57:40,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122771 states to 122771 states and 192983 transitions. [2022-11-16 15:57:40,386 INFO L78 Accepts]: Start accepts. Automaton has 122771 states and 192983 transitions. Word has length 34 [2022-11-16 15:57:40,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 15:57:40,388 INFO L495 AbstractCegarLoop]: Abstraction has 122771 states and 192983 transitions. [2022-11-16 15:57:40,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-16 15:57:40,389 INFO L276 IsEmpty]: Start isEmpty. Operand 122771 states and 192983 transitions. [2022-11-16 15:57:40,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-11-16 15:57:40,390 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 15:57:40,391 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 15:57:40,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 15:57:40,391 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 15:57:40,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 15:57:40,392 INFO L85 PathProgramCache]: Analyzing trace with hash -257064914, now seen corresponding path program 1 times [2022-11-16 15:57:40,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 15:57:40,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810381854] [2022-11-16 15:57:40,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 15:57:40,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 15:57:40,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 15:57:41,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 15:57:41,159 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 15:57:41,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810381854] [2022-11-16 15:57:41,160 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810381854] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 15:57:41,160 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 15:57:41,160 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 15:57:41,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858433808] [2022-11-16 15:57:41,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 15:57:41,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 15:57:41,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 15:57:41,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 15:57:41,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 15:57:41,164 INFO L87 Difference]: Start difference. First operand 122771 states and 192983 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3)