./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--amc6821.ko-main.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a 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_38ff9c42-ce0e-4979-8860-17d3f6ddd1d3/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38ff9c42-ce0e-4979-8860-17d3f6ddd1d3/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38ff9c42-ce0e-4979-8860-17d3f6ddd1d3/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38ff9c42-ce0e-4979-8860-17d3f6ddd1d3/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--amc6821.ko-main.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38ff9c42-ce0e-4979-8860-17d3f6ddd1d3/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38ff9c42-ce0e-4979-8860-17d3f6ddd1d3/bin/utaipan-7li7fVZpFI --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 b4ab5f9a609d808b1cc730f70e246b6cee2b77e8055db2b71a14eb45eb69a8df --- 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-5e519f3 [2022-11-03 02:01:44,464 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 02:01:44,467 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 02:01:44,525 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 02:01:44,525 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 02:01:44,530 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 02:01:44,532 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 02:01:44,535 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 02:01:44,537 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 02:01:44,547 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 02:01:44,548 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 02:01:44,550 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 02:01:44,551 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 02:01:44,552 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 02:01:44,554 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 02:01:44,556 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 02:01:44,557 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 02:01:44,558 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 02:01:44,560 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 02:01:44,562 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 02:01:44,567 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 02:01:44,568 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 02:01:44,570 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 02:01:44,572 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 02:01:44,578 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 02:01:44,578 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 02:01:44,578 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 02:01:44,579 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 02:01:44,580 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 02:01:44,580 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 02:01:44,581 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 02:01:44,581 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 02:01:44,582 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 02:01:44,583 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 02:01:44,584 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 02:01:44,584 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 02:01:44,585 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 02:01:44,585 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 02:01:44,585 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 02:01:44,586 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 02:01:44,587 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 02:01:44,592 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38ff9c42-ce0e-4979-8860-17d3f6ddd1d3/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-03 02:01:44,634 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 02:01:44,634 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 02:01:44,635 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 02:01:44,635 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 02:01:44,636 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 02:01:44,636 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 02:01:44,636 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 02:01:44,637 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 02:01:44,637 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 02:01:44,637 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 02:01:44,638 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 02:01:44,638 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 02:01:44,639 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 02:01:44,639 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 02:01:44,639 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 02:01:44,639 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 02:01:44,640 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 02:01:44,640 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 02:01:44,641 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 02:01:44,641 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 02:01:44,641 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 02:01:44,641 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 02:01:44,641 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 02:01:44,642 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 02:01:44,642 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 02:01:44,642 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 02:01:44,642 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 02:01:44,643 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 02:01:44,643 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 02:01:44,643 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:01:44,643 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 02:01:44,644 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 02:01:44,644 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 02:01:44,644 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 02:01:44,645 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 02:01:44,645 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 02:01:44,645 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 02:01:44,645 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 02:01:44,645 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_38ff9c42-ce0e-4979-8860-17d3f6ddd1d3/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38ff9c42-ce0e-4979-8860-17d3f6ddd1d3/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b4ab5f9a609d808b1cc730f70e246b6cee2b77e8055db2b71a14eb45eb69a8df [2022-11-03 02:01:44,906 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 02:01:44,962 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 02:01:44,965 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 02:01:44,966 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 02:01:44,967 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 02:01:44,969 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38ff9c42-ce0e-4979-8860-17d3f6ddd1d3/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--amc6821.ko-main.cil.out.i [2022-11-03 02:01:45,058 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38ff9c42-ce0e-4979-8860-17d3f6ddd1d3/bin/utaipan-7li7fVZpFI/data/cb5bd045c/bdaae83c6d88472faf89da129b44d448/FLAGfb8c40735 [2022-11-03 02:01:46,012 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 02:01:46,013 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38ff9c42-ce0e-4979-8860-17d3f6ddd1d3/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--amc6821.ko-main.cil.out.i [2022-11-03 02:01:46,053 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38ff9c42-ce0e-4979-8860-17d3f6ddd1d3/bin/utaipan-7li7fVZpFI/data/cb5bd045c/bdaae83c6d88472faf89da129b44d448/FLAGfb8c40735 [2022-11-03 02:01:46,486 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38ff9c42-ce0e-4979-8860-17d3f6ddd1d3/bin/utaipan-7li7fVZpFI/data/cb5bd045c/bdaae83c6d88472faf89da129b44d448 [2022-11-03 02:01:46,488 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 02:01:46,489 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 02:01:46,493 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 02:01:46,494 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 02:01:46,497 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 02:01:46,499 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:01:46" (1/1) ... [2022-11-03 02:01:46,500 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6740d699 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:01:46, skipping insertion in model container [2022-11-03 02:01:46,500 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:01:46" (1/1) ... [2022-11-03 02:01:46,509 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 02:01:46,617 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:01:47,856 WARN L230 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_38ff9c42-ce0e-4979-8860-17d3f6ddd1d3/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--amc6821.ko-main.cil.out.i[139464,139477] [2022-11-03 02:01:48,000 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:01:48,059 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 02:01:48,353 WARN L230 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_38ff9c42-ce0e-4979-8860-17d3f6ddd1d3/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--amc6821.ko-main.cil.out.i[139464,139477] [2022-11-03 02:01:48,367 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:01:48,505 INFO L208 MainTranslator]: Completed translation [2022-11-03 02:01:48,506 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:01:48 WrapperNode [2022-11-03 02:01:48,506 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 02:01:48,508 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 02:01:48,508 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 02:01:48,508 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 02:01:48,516 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:01:48" (1/1) ... [2022-11-03 02:01:48,587 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:01:48" (1/1) ... [2022-11-03 02:01:48,705 INFO L138 Inliner]: procedures = 138, calls = 1364, calls flagged for inlining = 60, calls inlined = 52, statements flattened = 3523 [2022-11-03 02:01:48,705 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 02:01:48,706 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 02:01:48,706 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 02:01:48,706 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 02:01:48,716 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:01:48" (1/1) ... [2022-11-03 02:01:48,716 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:01:48" (1/1) ... [2022-11-03 02:01:48,731 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:01:48" (1/1) ... [2022-11-03 02:01:48,732 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:01:48" (1/1) ... [2022-11-03 02:01:48,798 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:01:48" (1/1) ... [2022-11-03 02:01:48,811 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:01:48" (1/1) ... [2022-11-03 02:01:48,824 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:01:48" (1/1) ... [2022-11-03 02:01:48,844 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:01:48" (1/1) ... [2022-11-03 02:01:48,879 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 02:01:48,882 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 02:01:48,884 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 02:01:48,884 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 02:01:48,885 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:01:48" (1/1) ... [2022-11-03 02:01:48,895 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:01:48,908 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38ff9c42-ce0e-4979-8860-17d3f6ddd1d3/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:01:48,924 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38ff9c42-ce0e-4979-8860-17d3f6ddd1d3/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 02:01:48,952 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38ff9c42-ce0e-4979-8860-17d3f6ddd1d3/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 02:01:48,978 INFO L130 BoogieDeclarations]: Found specification of procedure get_pwm1_auto_point_pwm [2022-11-03 02:01:48,979 INFO L138 BoogieDeclarations]: Found implementation of procedure get_pwm1_auto_point_pwm [2022-11-03 02:01:48,979 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 02:01:48,979 INFO L130 BoogieDeclarations]: Found specification of procedure get_fan [2022-11-03 02:01:48,979 INFO L138 BoogieDeclarations]: Found implementation of procedure get_fan [2022-11-03 02:01:48,979 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_remove_group [2022-11-03 02:01:48,979 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_remove_group [2022-11-03 02:01:48,980 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_get_clientdata [2022-11-03 02:01:48,980 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_get_clientdata [2022-11-03 02:01:48,980 INFO L130 BoogieDeclarations]: Found specification of procedure amc6821_detect [2022-11-03 02:01:48,980 INFO L138 BoogieDeclarations]: Found implementation of procedure amc6821_detect [2022-11-03 02:01:48,980 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-03 02:01:48,980 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-03 02:01:48,980 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 02:01:48,981 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-03 02:01:48,981 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-03 02:01:48,981 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-03 02:01:48,981 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-03 02:01:48,981 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-03 02:01:48,981 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-03 02:01:48,981 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 02:01:48,982 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_update_lock_of_amc6821_data [2022-11-03 02:01:48,982 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_update_lock_of_amc6821_data [2022-11-03 02:01:48,982 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-11-03 02:01:48,982 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-11-03 02:01:48,982 INFO L130 BoogieDeclarations]: Found specification of procedure get_temp_auto_point_temp [2022-11-03 02:01:48,982 INFO L138 BoogieDeclarations]: Found implementation of procedure get_temp_auto_point_temp [2022-11-03 02:01:48,982 INFO L130 BoogieDeclarations]: Found specification of procedure set_slope_register [2022-11-03 02:01:48,983 INFO L138 BoogieDeclarations]: Found implementation of procedure set_slope_register [2022-11-03 02:01:48,983 INFO L130 BoogieDeclarations]: Found specification of procedure get_temp_alarm [2022-11-03 02:01:48,983 INFO L138 BoogieDeclarations]: Found implementation of procedure get_temp_alarm [2022-11-03 02:01:48,983 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 02:01:48,983 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 02:01:48,984 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 02:01:48,984 INFO L130 BoogieDeclarations]: Found specification of procedure SENSORS_LIMIT [2022-11-03 02:01:48,984 INFO L138 BoogieDeclarations]: Found implementation of procedure SENSORS_LIMIT [2022-11-03 02:01:48,984 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_smbus_read_byte_data [2022-11-03 02:01:48,984 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_smbus_read_byte_data [2022-11-03 02:01:48,984 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 02:01:48,984 INFO L130 BoogieDeclarations]: Found specification of procedure amc6821_update_device [2022-11-03 02:01:48,985 INFO L138 BoogieDeclarations]: Found implementation of procedure amc6821_update_device [2022-11-03 02:01:48,985 INFO L130 BoogieDeclarations]: Found specification of procedure kstrtol [2022-11-03 02:01:48,985 INFO L138 BoogieDeclarations]: Found implementation of procedure kstrtol [2022-11-03 02:01:48,985 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 02:01:48,985 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-03 02:01:48,985 INFO L130 BoogieDeclarations]: Found specification of procedure get_temp [2022-11-03 02:01:48,985 INFO L138 BoogieDeclarations]: Found implementation of procedure get_temp [2022-11-03 02:01:48,985 INFO L130 BoogieDeclarations]: Found specification of procedure set_temp [2022-11-03 02:01:48,986 INFO L138 BoogieDeclarations]: Found implementation of procedure set_temp [2022-11-03 02:01:48,986 INFO L130 BoogieDeclarations]: Found specification of procedure set_fan [2022-11-03 02:01:48,986 INFO L138 BoogieDeclarations]: Found implementation of procedure set_fan [2022-11-03 02:01:48,986 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 02:01:48,986 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_smbus_write_byte_data [2022-11-03 02:01:48,986 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_smbus_write_byte_data [2022-11-03 02:01:48,986 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_update_lock_of_amc6821_data [2022-11-03 02:01:48,987 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_update_lock_of_amc6821_data [2022-11-03 02:01:48,987 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 02:01:48,987 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 02:01:48,987 INFO L130 BoogieDeclarations]: Found specification of procedure set_temp_auto_point_temp [2022-11-03 02:01:48,987 INFO L138 BoogieDeclarations]: Found implementation of procedure set_temp_auto_point_temp [2022-11-03 02:01:48,987 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-11-03 02:01:48,987 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-11-03 02:01:49,672 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 02:01:49,674 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 02:01:53,444 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 02:01:54,594 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 02:01:54,594 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-03 02:01:54,602 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:01:54 BoogieIcfgContainer [2022-11-03 02:01:54,602 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 02:01:54,605 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 02:01:54,605 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 02:01:54,609 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 02:01:54,609 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:01:46" (1/3) ... [2022-11-03 02:01:54,610 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@104ea411 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:01:54, skipping insertion in model container [2022-11-03 02:01:54,610 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:01:48" (2/3) ... [2022-11-03 02:01:54,611 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@104ea411 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:01:54, skipping insertion in model container [2022-11-03 02:01:54,611 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:01:54" (3/3) ... [2022-11-03 02:01:54,612 INFO L112 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--hwmon--amc6821.ko-main.cil.out.i [2022-11-03 02:01:54,632 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 02:01:54,632 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 02:01:54,696 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:01:54,703 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;@65b3a639, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:01:54,703 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 02:01:54,710 INFO L276 IsEmpty]: Start isEmpty. Operand has 642 states, 445 states have (on average 1.5460674157303371) internal successors, (688), 452 states have internal predecessors, (688), 170 states have call successors, (170), 25 states have call predecessors, (170), 25 states have return successors, (170), 170 states have call predecessors, (170), 170 states have call successors, (170) [2022-11-03 02:01:54,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-03 02:01:54,723 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:01:54,724 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] [2022-11-03 02:01:54,725 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:01:54,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:01:54,730 INFO L85 PathProgramCache]: Analyzing trace with hash 1645471533, now seen corresponding path program 1 times [2022-11-03 02:01:54,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:01:54,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225742960] [2022-11-03 02:01:54,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:01:54,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:01:55,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:01:55,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:01:55,628 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:01:55,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225742960] [2022-11-03 02:01:55,630 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225742960] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:01:55,630 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:01:55,631 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:01:55,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170912948] [2022-11-03 02:01:55,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:01:55,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:01:55,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:01:55,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:01:55,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:01:55,684 INFO L87 Difference]: Start difference. First operand has 642 states, 445 states have (on average 1.5460674157303371) internal successors, (688), 452 states have internal predecessors, (688), 170 states have call successors, (170), 25 states have call predecessors, (170), 25 states have return successors, (170), 170 states have call predecessors, (170), 170 states have call successors, (170) 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, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 02:01:56,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:01:56,700 INFO L93 Difference]: Finished difference Result 1913 states and 3198 transitions. [2022-11-03 02:01:56,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:01:56,705 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, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 32 [2022-11-03 02:01:56,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:01:56,731 INFO L225 Difference]: With dead ends: 1913 [2022-11-03 02:01:56,731 INFO L226 Difference]: Without dead ends: 1268 [2022-11-03 02:01:56,747 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 [2022-11-03 02:01:56,750 INFO L413 NwaCegarLoop]: 1079 mSDtfsCounter, 994 mSDsluCounter, 1011 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 994 SdHoareTripleChecker+Valid, 1989 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-03 02:01:56,751 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [994 Valid, 1989 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-03 02:01:56,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1268 states. [2022-11-03 02:01:56,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1268 to 1255. [2022-11-03 02:01:56,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1255 states, 874 states have (on average 1.5411899313501145) internal successors, (1347), 879 states have internal predecessors, (1347), 332 states have call successors, (332), 49 states have call predecessors, (332), 48 states have return successors, (326), 326 states have call predecessors, (326), 326 states have call successors, (326) [2022-11-03 02:01:56,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1255 states to 1255 states and 2005 transitions. [2022-11-03 02:01:56,908 INFO L78 Accepts]: Start accepts. Automaton has 1255 states and 2005 transitions. Word has length 32 [2022-11-03 02:01:56,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:01:56,909 INFO L495 AbstractCegarLoop]: Abstraction has 1255 states and 2005 transitions. [2022-11-03 02:01:56,909 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, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 02:01:56,909 INFO L276 IsEmpty]: Start isEmpty. Operand 1255 states and 2005 transitions. [2022-11-03 02:01:56,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-03 02:01:56,912 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:01:56,912 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] [2022-11-03 02:01:56,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 02:01:56,913 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:01:56,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:01:56,914 INFO L85 PathProgramCache]: Analyzing trace with hash 323295754, now seen corresponding path program 1 times [2022-11-03 02:01:56,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:01:56,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62821600] [2022-11-03 02:01:56,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:01:56,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:01:57,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:01:57,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:01:57,409 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:01:57,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62821600] [2022-11-03 02:01:57,410 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62821600] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:01:57,410 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:01:57,410 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:01:57,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297396920] [2022-11-03 02:01:57,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:01:57,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:01:57,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:01:57,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:01:57,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:01:57,419 INFO L87 Difference]: Start difference. First operand 1255 states and 2005 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, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 02:01:58,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:01:58,477 INFO L93 Difference]: Finished difference Result 3746 states and 5983 transitions. [2022-11-03 02:01:58,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:01:58,477 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, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 32 [2022-11-03 02:01:58,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:01:58,497 INFO L225 Difference]: With dead ends: 3746 [2022-11-03 02:01:58,497 INFO L226 Difference]: Without dead ends: 2492 [2022-11-03 02:01:58,505 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 [2022-11-03 02:01:58,506 INFO L413 NwaCegarLoop]: 1090 mSDtfsCounter, 991 mSDsluCounter, 1009 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 991 SdHoareTripleChecker+Valid, 1999 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-03 02:01:58,507 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [991 Valid, 1999 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-03 02:01:58,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2492 states. [2022-11-03 02:01:58,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2492 to 2479. [2022-11-03 02:01:58,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2479 states, 1728 states have (on average 1.5393518518518519) internal successors, (2660), 1733 states have internal predecessors, (2660), 654 states have call successors, (654), 97 states have call predecessors, (654), 96 states have return successors, (648), 648 states have call predecessors, (648), 648 states have call successors, (648) [2022-11-03 02:01:58,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2479 states to 2479 states and 3962 transitions. [2022-11-03 02:01:58,690 INFO L78 Accepts]: Start accepts. Automaton has 2479 states and 3962 transitions. Word has length 32 [2022-11-03 02:01:58,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:01:58,691 INFO L495 AbstractCegarLoop]: Abstraction has 2479 states and 3962 transitions. [2022-11-03 02:01:58,691 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, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 02:01:58,691 INFO L276 IsEmpty]: Start isEmpty. Operand 2479 states and 3962 transitions. [2022-11-03 02:01:58,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-03 02:01:58,695 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:01:58,695 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] [2022-11-03 02:01:58,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 02:01:58,696 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:01:58,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:01:58,698 INFO L85 PathProgramCache]: Analyzing trace with hash -698225684, now seen corresponding path program 1 times [2022-11-03 02:01:58,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:01:58,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993987608] [2022-11-03 02:01:58,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:01:58,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:01:58,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:01:59,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:01:59,079 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:01:59,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993987608] [2022-11-03 02:01:59,079 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993987608] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:01:59,080 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:01:59,080 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:01:59,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621275405] [2022-11-03 02:01:59,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:01:59,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:01:59,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:01:59,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:01:59,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:01:59,087 INFO L87 Difference]: Start difference. First operand 2479 states and 3962 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 02:02:00,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:02:00,196 INFO L93 Difference]: Finished difference Result 7418 states and 11854 transitions. [2022-11-03 02:02:00,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:02:00,197 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 26 [2022-11-03 02:02:00,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:02:00,229 INFO L225 Difference]: With dead ends: 7418 [2022-11-03 02:02:00,229 INFO L226 Difference]: Without dead ends: 4940 [2022-11-03 02:02:00,242 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 [2022-11-03 02:02:00,243 INFO L413 NwaCegarLoop]: 1103 mSDtfsCounter, 1002 mSDsluCounter, 1012 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1002 SdHoareTripleChecker+Valid, 2016 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-03 02:02:00,244 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1002 Valid, 2016 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-03 02:02:00,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4940 states. [2022-11-03 02:02:00,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4940 to 4927. [2022-11-03 02:02:00,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4927 states, 3436 states have (on average 1.5378346915017462) internal successors, (5284), 3441 states have internal predecessors, (5284), 1298 states have call successors, (1298), 193 states have call predecessors, (1298), 192 states have return successors, (1292), 1292 states have call predecessors, (1292), 1292 states have call successors, (1292) [2022-11-03 02:02:00,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4927 states to 4927 states and 7874 transitions. [2022-11-03 02:02:00,573 INFO L78 Accepts]: Start accepts. Automaton has 4927 states and 7874 transitions. Word has length 26 [2022-11-03 02:02:00,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:02:00,574 INFO L495 AbstractCegarLoop]: Abstraction has 4927 states and 7874 transitions. [2022-11-03 02:02:00,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 02:02:00,574 INFO L276 IsEmpty]: Start isEmpty. Operand 4927 states and 7874 transitions. [2022-11-03 02:02:00,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-03 02:02:00,576 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:02:00,576 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] [2022-11-03 02:02:00,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 02:02:00,577 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:02:00,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:02:00,578 INFO L85 PathProgramCache]: Analyzing trace with hash 865687195, now seen corresponding path program 1 times [2022-11-03 02:02:00,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:02:00,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055055615] [2022-11-03 02:02:00,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:02:00,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:02:00,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:02:00,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:02:00,874 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:02:00,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055055615] [2022-11-03 02:02:00,875 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055055615] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:02:00,875 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:02:00,875 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:02:00,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287008227] [2022-11-03 02:02:00,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:02:00,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:02:00,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:02:00,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:02:00,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:02:00,880 INFO L87 Difference]: Start difference. First operand 4927 states and 7874 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 02:02:02,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:02:02,034 INFO L93 Difference]: Finished difference Result 14746 states and 23562 transitions. [2022-11-03 02:02:02,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:02:02,034 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 26 [2022-11-03 02:02:02,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:02:02,095 INFO L225 Difference]: With dead ends: 14746 [2022-11-03 02:02:02,096 INFO L226 Difference]: Without dead ends: 9820 [2022-11-03 02:02:02,119 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 [2022-11-03 02:02:02,120 INFO L413 NwaCegarLoop]: 1108 mSDtfsCounter, 1004 mSDsluCounter, 1012 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1004 SdHoareTripleChecker+Valid, 2020 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-03 02:02:02,120 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1004 Valid, 2020 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-03 02:02:02,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9820 states. [2022-11-03 02:02:02,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9820 to 9807. [2022-11-03 02:02:02,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9807 states, 6840 states have (on average 1.5362573099415204) internal successors, (10508), 6845 states have internal predecessors, (10508), 2582 states have call successors, (2582), 385 states have call predecessors, (2582), 384 states have return successors, (2576), 2576 states have call predecessors, (2576), 2576 states have call successors, (2576) [2022-11-03 02:02:02,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9807 states to 9807 states and 15666 transitions. [2022-11-03 02:02:02,929 INFO L78 Accepts]: Start accepts. Automaton has 9807 states and 15666 transitions. Word has length 26 [2022-11-03 02:02:02,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:02:02,930 INFO L495 AbstractCegarLoop]: Abstraction has 9807 states and 15666 transitions. [2022-11-03 02:02:02,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 02:02:02,930 INFO L276 IsEmpty]: Start isEmpty. Operand 9807 states and 15666 transitions. [2022-11-03 02:02:02,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-03 02:02:02,932 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:02:02,932 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] [2022-11-03 02:02:02,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 02:02:02,932 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:02:02,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:02:02,933 INFO L85 PathProgramCache]: Analyzing trace with hash 1124666682, now seen corresponding path program 1 times [2022-11-03 02:02:02,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:02:02,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686673343] [2022-11-03 02:02:02,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:02:02,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:02:03,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:02:03,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:02:03,274 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:02:03,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686673343] [2022-11-03 02:02:03,274 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686673343] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:02:03,275 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:02:03,275 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:02:03,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906583448] [2022-11-03 02:02:03,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:02:03,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:02:03,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:02:03,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:02:03,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:02:03,277 INFO L87 Difference]: Start difference. First operand 9807 states and 15666 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, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 02:02:04,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:02:04,864 INFO L93 Difference]: Finished difference Result 29354 states and 46882 transitions. [2022-11-03 02:02:04,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:02:04,865 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, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 30 [2022-11-03 02:02:04,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:02:04,981 INFO L225 Difference]: With dead ends: 29354 [2022-11-03 02:02:04,981 INFO L226 Difference]: Without dead ends: 19548 [2022-11-03 02:02:05,029 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 [2022-11-03 02:02:05,030 INFO L413 NwaCegarLoop]: 1114 mSDtfsCounter, 1000 mSDsluCounter, 1012 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1000 SdHoareTripleChecker+Valid, 2026 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-03 02:02:05,030 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1000 Valid, 2026 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-03 02:02:05,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19548 states. [2022-11-03 02:02:06,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19548 to 19535. [2022-11-03 02:02:06,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19535 states, 13624 states have (on average 1.5346447445684086) internal successors, (20908), 13629 states have internal predecessors, (20908), 5142 states have call successors, (5142), 769 states have call predecessors, (5142), 768 states have return successors, (5136), 5136 states have call predecessors, (5136), 5136 states have call successors, (5136) [2022-11-03 02:02:06,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19535 states to 19535 states and 31186 transitions. [2022-11-03 02:02:06,475 INFO L78 Accepts]: Start accepts. Automaton has 19535 states and 31186 transitions. Word has length 30 [2022-11-03 02:02:06,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:02:06,476 INFO L495 AbstractCegarLoop]: Abstraction has 19535 states and 31186 transitions. [2022-11-03 02:02:06,477 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, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 02:02:06,477 INFO L276 IsEmpty]: Start isEmpty. Operand 19535 states and 31186 transitions. [2022-11-03 02:02:06,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-03 02:02:06,479 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:02:06,480 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] [2022-11-03 02:02:06,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 02:02:06,480 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:02:06,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:02:06,481 INFO L85 PathProgramCache]: Analyzing trace with hash 2051552966, now seen corresponding path program 1 times [2022-11-03 02:02:06,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:02:06,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253407984] [2022-11-03 02:02:06,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:02:06,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:02:06,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:02:06,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:02:06,809 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:02:06,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253407984] [2022-11-03 02:02:06,810 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253407984] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:02:06,810 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:02:06,810 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:02:06,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498027318] [2022-11-03 02:02:06,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:02:06,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:02:06,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:02:06,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:02:06,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:02:06,812 INFO L87 Difference]: Start difference. First operand 19535 states and 31186 transitions. 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, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 02:02:09,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:02:09,256 INFO L93 Difference]: Finished difference Result 58474 states and 93330 transitions. [2022-11-03 02:02:09,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:02:09,257 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, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 29 [2022-11-03 02:02:09,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:02:09,495 INFO L225 Difference]: With dead ends: 58474 [2022-11-03 02:02:09,495 INFO L226 Difference]: Without dead ends: 38940 [2022-11-03 02:02:09,729 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 [2022-11-03 02:02:09,730 INFO L413 NwaCegarLoop]: 1120 mSDtfsCounter, 1001 mSDsluCounter, 1012 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1001 SdHoareTripleChecker+Valid, 2032 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-03 02:02:09,730 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1001 Valid, 2032 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-03 02:02:09,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38940 states. [2022-11-03 02:02:12,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38940 to 38927. [2022-11-03 02:02:12,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38927 states, 27144 states have (on average 1.5330091364574123) internal successors, (41612), 27149 states have internal predecessors, (41612), 10246 states have call successors, (10246), 1537 states have call predecessors, (10246), 1536 states have return successors, (10240), 10240 states have call predecessors, (10240), 10240 states have call successors, (10240) [2022-11-03 02:02:12,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38927 states to 38927 states and 62098 transitions. [2022-11-03 02:02:12,582 INFO L78 Accepts]: Start accepts. Automaton has 38927 states and 62098 transitions. Word has length 29 [2022-11-03 02:02:12,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:02:12,583 INFO L495 AbstractCegarLoop]: Abstraction has 38927 states and 62098 transitions. [2022-11-03 02:02:12,583 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, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 02:02:12,583 INFO L276 IsEmpty]: Start isEmpty. Operand 38927 states and 62098 transitions. [2022-11-03 02:02:12,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-03 02:02:12,585 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:02:12,585 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] [2022-11-03 02:02:12,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-03 02:02:12,586 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:02:12,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:02:12,587 INFO L85 PathProgramCache]: Analyzing trace with hash 1759135505, now seen corresponding path program 1 times [2022-11-03 02:02:12,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:02:12,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258292621] [2022-11-03 02:02:12,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:02:12,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:02:12,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:02:13,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:02:13,007 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:02:13,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258292621] [2022-11-03 02:02:13,008 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258292621] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:02:13,008 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:02:13,008 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:02:13,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124827763] [2022-11-03 02:02:13,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:02:13,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:02:13,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:02:13,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:02:13,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:02:13,013 INFO L87 Difference]: Start difference. First operand 38927 states and 62098 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 02:02:16,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:02:16,678 INFO L93 Difference]: Finished difference Result 116522 states and 185842 transitions. [2022-11-03 02:02:16,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:02:16,679 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 25 [2022-11-03 02:02:16,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:02:17,217 INFO L225 Difference]: With dead ends: 116522 [2022-11-03 02:02:17,218 INFO L226 Difference]: Without dead ends: 77596 [2022-11-03 02:02:17,408 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 [2022-11-03 02:02:17,412 INFO L413 NwaCegarLoop]: 1126 mSDtfsCounter, 1003 mSDsluCounter, 1012 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1003 SdHoareTripleChecker+Valid, 2039 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-03 02:02:17,412 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1003 Valid, 2039 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-03 02:02:17,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77596 states. [2022-11-03 02:02:21,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77596 to 77583. [2022-11-03 02:02:21,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77583 states, 54088 states have (on average 1.5313563082384263) internal successors, (82828), 54093 states have internal predecessors, (82828), 20422 states have call successors, (20422), 3073 states have call predecessors, (20422), 3072 states have return successors, (20416), 20416 states have call predecessors, (20416), 20416 states have call successors, (20416) [2022-11-03 02:02:21,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77583 states to 77583 states and 123666 transitions. [2022-11-03 02:02:21,884 INFO L78 Accepts]: Start accepts. Automaton has 77583 states and 123666 transitions. Word has length 25 [2022-11-03 02:02:21,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:02:21,886 INFO L495 AbstractCegarLoop]: Abstraction has 77583 states and 123666 transitions. [2022-11-03 02:02:21,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 02:02:21,887 INFO L276 IsEmpty]: Start isEmpty. Operand 77583 states and 123666 transitions. [2022-11-03 02:02:21,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-11-03 02:02:21,889 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:02:21,890 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] [2022-11-03 02:02:21,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-03 02:02:21,890 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:02:21,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:02:21,891 INFO L85 PathProgramCache]: Analyzing trace with hash 87111557, now seen corresponding path program 1 times [2022-11-03 02:02:21,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:02:21,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205906465] [2022-11-03 02:02:21,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:02:21,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:02:21,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:02:22,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:02:22,156 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:02:22,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205906465] [2022-11-03 02:02:22,157 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205906465] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:02:22,157 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:02:22,157 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:02:22,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805508812] [2022-11-03 02:02:22,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:02:22,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:02:22,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:02:22,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:02:22,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:02:22,159 INFO L87 Difference]: Start difference. First operand 77583 states and 123666 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, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 02:02:28,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:02:28,818 INFO L93 Difference]: Finished difference Result 232234 states and 370098 transitions. [2022-11-03 02:02:28,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:02:28,823 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, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 33 [2022-11-03 02:02:28,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:02:29,703 INFO L225 Difference]: With dead ends: 232234 [2022-11-03 02:02:29,703 INFO L226 Difference]: Without dead ends: 154652 [2022-11-03 02:02:29,943 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 [2022-11-03 02:02:29,944 INFO L413 NwaCegarLoop]: 1131 mSDtfsCounter, 997 mSDsluCounter, 1012 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 997 SdHoareTripleChecker+Valid, 2043 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-03 02:02:29,945 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [997 Valid, 2043 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-03 02:02:30,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154652 states. [2022-11-03 02:02:37,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154652 to 154639. [2022-11-03 02:02:37,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154639 states, 107784 states have (on average 1.5296890076449194) internal successors, (164876), 107789 states have internal predecessors, (164876), 40710 states have call successors, (40710), 6145 states have call predecessors, (40710), 6144 states have return successors, (40704), 40704 states have call predecessors, (40704), 40704 states have call successors, (40704) [2022-11-03 02:02:38,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154639 states to 154639 states and 246290 transitions. [2022-11-03 02:02:38,990 INFO L78 Accepts]: Start accepts. Automaton has 154639 states and 246290 transitions. Word has length 33 [2022-11-03 02:02:38,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:02:38,991 INFO L495 AbstractCegarLoop]: Abstraction has 154639 states and 246290 transitions. [2022-11-03 02:02:38,991 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, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 02:02:38,992 INFO L276 IsEmpty]: Start isEmpty. Operand 154639 states and 246290 transitions. [2022-11-03 02:02:38,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-03 02:02:38,994 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:02:38,994 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] [2022-11-03 02:02:38,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-03 02:02:38,995 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:02:38,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:02:38,996 INFO L85 PathProgramCache]: Analyzing trace with hash -967374083, now seen corresponding path program 1 times [2022-11-03 02:02:38,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:02:38,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833844957] [2022-11-03 02:02:38,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:02:38,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:02:39,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:02:39,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:02:39,295 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:02:39,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833844957] [2022-11-03 02:02:39,295 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833844957] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:02:39,296 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:02:39,296 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:02:39,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633634235] [2022-11-03 02:02:39,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:02:39,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:02:39,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:02:39,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:02:39,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:02:39,299 INFO L87 Difference]: Start difference. First operand 154639 states and 246290 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, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)